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FFmpeg/libswscale/swscale.c

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  1. /*

  2.  * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>

  3.  *

  4.  * This file is part of FFmpeg.

  5.  *

  6.  * FFmpeg is free software; you can redistribute it and/or modify

  7.  * it under the terms of the GNU General Public License as published by

  8.  * the Free Software Foundation; either version 2 of the License, or

  9.  * (at your option) any later version.

  10.  *

  11.  * FFmpeg is distributed in the hope that it will be useful,

  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  14.  * GNU General Public License for more details.

  15.  *

  16.  * You should have received a copy of the GNU General Public License

  17.  * along with FFmpeg; if not, write to the Free Software

  18.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  19.  *

  20.  * the C code (not assembly, mmx, ...) of this file can be used

  21.  * under the LGPL license too

  22.  */

  23. 

  24. /*

  25.   supported Input formats: YV12, I420/IYUV, YUY2, UYVY, BGR32, BGR32_1, BGR24, BGR16, BGR15, RGB32, RGB32_1, RGB24, Y8/Y800, YVU9/IF09, PAL8

  26.   supported output formats: YV12, I420/IYUV, YUY2, UYVY, {BGR,RGB}{1,4,8,15,16,24,32}, Y8/Y800, YVU9/IF09

  27.   {BGR,RGB}{1,4,8,15,16} support dithering

  28. 

  29.   unscaled special converters (YV12=I420=IYUV, Y800=Y8)

  30.   YV12 -> {BGR,RGB}{1,4,8,15,16,24,32}

  31.   x -> x

  32.   YUV9 -> YV12

  33.   YUV9/YV12 -> Y800

  34.   Y800 -> YUV9/YV12

  35.   BGR24 -> BGR32 & RGB24 -> RGB32

  36.   BGR32 -> BGR24 & RGB32 -> RGB24

  37.   BGR15 -> BGR16

  38. */

  39. 

  40. /*

  41. tested special converters (most are tested actually, but I did not write it down ...)

  42.  YV12 -> BGR16

  43.  YV12 -> YV12

  44.  BGR15 -> BGR16

  45.  BGR16 -> BGR16

  46.  YVU9 -> YV12

  47. 

  48. untested special converters

  49.   YV12/I420 -> BGR15/BGR24/BGR32 (it is the yuv2rgb stuff, so it should be OK)

  50.   YV12/I420 -> YV12/I420

  51.   YUY2/BGR15/BGR24/BGR32/RGB24/RGB32 -> same format

  52.   BGR24 -> BGR32 & RGB24 -> RGB32

  53.   BGR32 -> BGR24 & RGB32 -> RGB24

  54.   BGR24 -> YV12

  55. */

  56. 

  57. #define _SVID_SOURCE //needed for MAP_ANONYMOUS

  58. #include <inttypes.h>

  59. #include <string.h>

  60. #include <math.h>

  61. #include <stdio.h>

  62. #include "config.h"

  63. #include <assert.h>

  64. #if HAVE_SYS_MMAN_H

  65. #include <sys/mman.h>

  66. #if defined(MAP_ANON) && !defined(MAP_ANONYMOUS)

  67. #define MAP_ANONYMOUS MAP_ANON

  68. #endif

  69. #endif

  70. #if HAVE_VIRTUALALLOC

  71. #define WIN32_LEAN_AND_MEAN

  72. #include <windows.h>

  73. #endif

  74. #include "swscale.h"

  75. #include "swscale_internal.h"

  76. #include "rgb2rgb.h"

  77. #include "libavutil/intreadwrite.h"

  78. #include "libavutil/x86_cpu.h"

  79. #include "libavutil/bswap.h"

  80. 

  81. unsigned swscale_version(void)

  82. {

  83.     return LIBSWSCALE_VERSION_INT;

  84. }

  85. 

  86. #undef MOVNTQ

  87. #undef PAVGB

  88. 

  89. //#undef HAVE_MMX2

  90. //#define HAVE_AMD3DNOW

  91. //#undef HAVE_MMX

  92. //#undef ARCH_X86

  93. #define DITHER1XBPP

  94. 

  95. #define FAST_BGR2YV12 // use 7 bit coefficients instead of 15 bit

  96. 

  97. #define RET 0xC3 //near return opcode for x86

  98. 

  99. #ifdef M_PI

  100. #define PI M_PI

  101. #else

  102. #define PI 3.14159265358979323846

  103. #endif

  104. 

  105. #define isSupportedIn(x)    (       \

  106.            (x)==PIX_FMT_YUV420P     \

  107.         || (x)==PIX_FMT_YUVA420P    \

  108.         || (x)==PIX_FMT_YUYV422     \

  109.         || (x)==PIX_FMT_UYVY422     \

  110.         || (x)==PIX_FMT_RGB48BE     \

  111.         || (x)==PIX_FMT_RGB48LE     \

  112.         || (x)==PIX_FMT_RGB32       \

  113.         || (x)==PIX_FMT_RGB32_1     \

  114.         || (x)==PIX_FMT_BGR24       \

  115.         || (x)==PIX_FMT_BGR565      \

  116.         || (x)==PIX_FMT_BGR555      \

  117.         || (x)==PIX_FMT_BGR32       \

  118.         || (x)==PIX_FMT_BGR32_1     \

  119.         || (x)==PIX_FMT_RGB24       \

  120.         || (x)==PIX_FMT_RGB565      \

  121.         || (x)==PIX_FMT_RGB555      \

  122.         || (x)==PIX_FMT_GRAY8       \

  123.         || (x)==PIX_FMT_YUV410P     \

  124.         || (x)==PIX_FMT_YUV440P     \

  125.         || (x)==PIX_FMT_GRAY16BE    \

  126.         || (x)==PIX_FMT_GRAY16LE    \

  127.         || (x)==PIX_FMT_YUV444P     \

  128.         || (x)==PIX_FMT_YUV422P     \

  129.         || (x)==PIX_FMT_YUV411P     \

  130.         || (x)==PIX_FMT_PAL8        \

  131.         || (x)==PIX_FMT_BGR8        \

  132.         || (x)==PIX_FMT_RGB8        \

  133.         || (x)==PIX_FMT_BGR4_BYTE   \

  134.         || (x)==PIX_FMT_RGB4_BYTE   \

  135.         || (x)==PIX_FMT_YUV440P     \

  136.         || (x)==PIX_FMT_MONOWHITE   \

  137.         || (x)==PIX_FMT_MONOBLACK   \

  138.         || (x)==PIX_FMT_YUV420PLE   \

  139.         || (x)==PIX_FMT_YUV422PLE   \

  140.         || (x)==PIX_FMT_YUV444PLE   \

  141.         || (x)==PIX_FMT_YUV420PBE   \

  142.         || (x)==PIX_FMT_YUV422PBE   \

  143.         || (x)==PIX_FMT_YUV444PBE   \

  144.     )

  145. #define isSupportedOut(x)   (       \

  146.            (x)==PIX_FMT_YUV420P     \

  147.         || (x)==PIX_FMT_YUVA420P    \

  148.         || (x)==PIX_FMT_YUYV422     \

  149.         || (x)==PIX_FMT_UYVY422     \

  150.         || (x)==PIX_FMT_YUV444P     \

  151.         || (x)==PIX_FMT_YUV422P     \

  152.         || (x)==PIX_FMT_YUV411P     \

  153.         || isRGB(x)                 \

  154.         || isBGR(x)                 \

  155.         || (x)==PIX_FMT_NV12        \

  156.         || (x)==PIX_FMT_NV21        \

  157.         || (x)==PIX_FMT_GRAY16BE    \

  158.         || (x)==PIX_FMT_GRAY16LE    \

  159.         || (x)==PIX_FMT_GRAY8       \

  160.         || (x)==PIX_FMT_YUV410P     \

  161.         || (x)==PIX_FMT_YUV440P     \

  162.         || (x)==PIX_FMT_YUV420PLE   \

  163.         || (x)==PIX_FMT_YUV422PLE   \

  164.         || (x)==PIX_FMT_YUV444PLE   \

  165.         || (x)==PIX_FMT_YUV420PBE   \

  166.         || (x)==PIX_FMT_YUV422PBE   \

  167.         || (x)==PIX_FMT_YUV444PBE   \

  168.     )

  169. #define isPacked(x)         (       \

  170.            (x)==PIX_FMT_PAL8        \

  171.         || (x)==PIX_FMT_YUYV422     \

  172.         || (x)==PIX_FMT_UYVY422     \

  173.         || isRGB(x)                 \

  174.         || isBGR(x)                 \

  175.     )

  176. #define usePal(x)           (       \

  177.            (x)==PIX_FMT_PAL8        \

  178.         || (x)==PIX_FMT_BGR4_BYTE   \

  179.         || (x)==PIX_FMT_RGB4_BYTE   \

  180.         || (x)==PIX_FMT_BGR8        \

  181.         || (x)==PIX_FMT_RGB8        \

  182.     )

  183. 

  184. #define RGB2YUV_SHIFT 15

  185. #define BY ( (int)(0.114*219/255*(1<<RGB2YUV_SHIFT)+0.5))

  186. #define BV (-(int)(0.081*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  187. #define BU ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  188. #define GY ( (int)(0.587*219/255*(1<<RGB2YUV_SHIFT)+0.5))

  189. #define GV (-(int)(0.419*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  190. #define GU (-(int)(0.331*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  191. #define RY ( (int)(0.299*219/255*(1<<RGB2YUV_SHIFT)+0.5))

  192. #define RV ( (int)(0.500*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  193. #define RU (-(int)(0.169*224/255*(1<<RGB2YUV_SHIFT)+0.5))

  194. 

  195. extern const int32_t ff_yuv2rgb_coeffs[8][4];

  196. 

  197. static const double rgb2yuv_table[8][9]={

  198.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},

  199.     {0.7152, 0.0722, 0.2126, -0.386, 0.5, -0.115, -0.454, -0.046, 0.5},

  200.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  201.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  202.     {0.59  , 0.11  , 0.30  , -0.331, 0.5, -0.169, -0.421, -0.079, 0.5}, //FCC

  203.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5},

  204.     {0.587 , 0.114 , 0.299 , -0.331, 0.5, -0.169, -0.419, -0.081, 0.5}, //SMPTE 170M

  205.     {0.701 , 0.087 , 0.212 , -0.384, 0.5  -0.116, -0.445, -0.055, 0.5}, //SMPTE 240M

  206. };

  207. 

  208. /*

  209. NOTES

  210. Special versions: fast Y 1:1 scaling (no interpolation in y direction)

  211. 

  212. TODO

  213. more intelligent misalignment avoidance for the horizontal scaler

  214. write special vertical cubic upscale version

  215. optimize C code (YV12 / minmax)

  216. add support for packed pixel YUV input & output

  217. add support for Y8 output

  218. optimize BGR24 & BGR32

  219. add BGR4 output support

  220. write special BGR->BGR scaler

  221. */

  222. 

  223. #if ARCH_X86 && CONFIG_GPL

  224. DECLARE_ASM_CONST(8, uint64_t, bF8)=       0xF8F8F8F8F8F8F8F8LL;

  225. DECLARE_ASM_CONST(8, uint64_t, bFC)=       0xFCFCFCFCFCFCFCFCLL;

  226. DECLARE_ASM_CONST(8, uint64_t, w10)=       0x0010001000100010LL;

  227. DECLARE_ASM_CONST(8, uint64_t, w02)=       0x0002000200020002LL;

  228. DECLARE_ASM_CONST(8, uint64_t, bm00001111)=0x00000000FFFFFFFFLL;

  229. DECLARE_ASM_CONST(8, uint64_t, bm00000111)=0x0000000000FFFFFFLL;

  230. DECLARE_ASM_CONST(8, uint64_t, bm11111000)=0xFFFFFFFFFF000000LL;

  231. DECLARE_ASM_CONST(8, uint64_t, bm01010101)=0x00FF00FF00FF00FFLL;

  232. 

  233. const DECLARE_ALIGNED(8, uint64_t, ff_dither4[2]) = {

  234.         0x0103010301030103LL,

  235.         0x0200020002000200LL,};

  236. 

  237. const DECLARE_ALIGNED(8, uint64_t, ff_dither8[2]) = {

  238.         0x0602060206020602LL,

  239.         0x0004000400040004LL,};

  240. 

  241. DECLARE_ASM_CONST(8, uint64_t, b16Mask)=   0x001F001F001F001FLL;

  242. DECLARE_ASM_CONST(8, uint64_t, g16Mask)=   0x07E007E007E007E0LL;

  243. DECLARE_ASM_CONST(8, uint64_t, r16Mask)=   0xF800F800F800F800LL;

  244. DECLARE_ASM_CONST(8, uint64_t, b15Mask)=   0x001F001F001F001FLL;

  245. DECLARE_ASM_CONST(8, uint64_t, g15Mask)=   0x03E003E003E003E0LL;

  246. DECLARE_ASM_CONST(8, uint64_t, r15Mask)=   0x7C007C007C007C00LL;

  247. 

  248. DECLARE_ALIGNED(8, const uint64_t, ff_M24A)         = 0x00FF0000FF0000FFLL;

  249. DECLARE_ALIGNED(8, const uint64_t, ff_M24B)         = 0xFF0000FF0000FF00LL;

  250. DECLARE_ALIGNED(8, const uint64_t, ff_M24C)         = 0x0000FF0000FF0000LL;

  251. 

  252. #ifdef FAST_BGR2YV12

  253. DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff)   = 0x000000210041000DULL;

  254. DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff)   = 0x0000FFEEFFDC0038ULL;

  255. DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff)   = 0x00000038FFD2FFF8ULL;

  256. #else

  257. DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YCoeff)   = 0x000020E540830C8BULL;

  258. DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UCoeff)   = 0x0000ED0FDAC23831ULL;

  259. DECLARE_ALIGNED(8, const uint64_t, ff_bgr2VCoeff)   = 0x00003831D0E6F6EAULL;

  260. #endif /* FAST_BGR2YV12 */

  261. DECLARE_ALIGNED(8, const uint64_t, ff_bgr2YOffset)  = 0x1010101010101010ULL;

  262. DECLARE_ALIGNED(8, const uint64_t, ff_bgr2UVOffset) = 0x8080808080808080ULL;

  263. DECLARE_ALIGNED(8, const uint64_t, ff_w1111)        = 0x0001000100010001ULL;

  264. 

  265. DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toY1Coeff) = 0x0C88000040870C88ULL;

  266. DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toY2Coeff) = 0x20DE4087000020DEULL;

  267. DECLARE_ASM_CONST(8, uint64_t, ff_rgb24toY1Coeff) = 0x20DE0000408720DEULL;

  268. DECLARE_ASM_CONST(8, uint64_t, ff_rgb24toY2Coeff) = 0x0C88408700000C88ULL;

  269. DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toYOffset) = 0x0008400000084000ULL;

  270. 

  271. DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toUV[2][4]) = {

  272.     {0x38380000DAC83838ULL, 0xECFFDAC80000ECFFULL, 0xF6E40000D0E3F6E4ULL, 0x3838D0E300003838ULL},

  273.     {0xECFF0000DAC8ECFFULL, 0x3838DAC800003838ULL, 0x38380000D0E33838ULL, 0xF6E4D0E30000F6E4ULL},

  274. };

  275. 

  276. DECLARE_ASM_CONST(8, uint64_t, ff_bgr24toUVOffset)= 0x0040400000404000ULL;

  277. 

  278. #endif /* ARCH_X86 && CONFIG_GPL */

  279. 

  280. // clipping helper table for C implementations:

  281. static unsigned char clip_table[768];

  282. 

  283. static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b);

  284. 

  285. DECLARE_ALIGNED(8, static const uint8_t, dither_2x2_4[2][8])={

  286. {  1,   3,   1,   3,   1,   3,   1,   3, },

  287. {  2,   0,   2,   0,   2,   0,   2,   0, },

  288. };

  289. 

  290. DECLARE_ALIGNED(8, static const uint8_t, dither_2x2_8[2][8])={

  291. {  6,   2,   6,   2,   6,   2,   6,   2, },

  292. {  0,   4,   0,   4,   0,   4,   0,   4, },

  293. };

  294. 

  295. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_32[8][8])={

  296. { 17,   9,  23,  15,  16,   8,  22,  14, },

  297. {  5,  29,   3,  27,   4,  28,   2,  26, },

  298. { 21,  13,  19,  11,  20,  12,  18,  10, },

  299. {  0,  24,   6,  30,   1,  25,   7,  31, },

  300. { 16,   8,  22,  14,  17,   9,  23,  15, },

  301. {  4,  28,   2,  26,   5,  29,   3,  27, },

  302. { 20,  12,  18,  10,  21,  13,  19,  11, },

  303. {  1,  25,   7,  31,   0,  24,   6,  30, },

  304. };

  305. 

  306. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_73[8][8])={

  307. {  0,  55,  14,  68,   3,  58,  17,  72, },

  308. { 37,  18,  50,  32,  40,  22,  54,  35, },

  309. {  9,  64,   5,  59,  13,  67,   8,  63, },

  310. { 46,  27,  41,  23,  49,  31,  44,  26, },

  311. {  2,  57,  16,  71,   1,  56,  15,  70, },

  312. { 39,  21,  52,  34,  38,  19,  51,  33, },

  313. { 11,  66,   7,  62,  10,  65,   6,  60, },

  314. { 48,  30,  43,  25,  47,  29,  42,  24, },

  315. };

  316. 

  317. #if 1

  318. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220[8][8])={

  319. {117,  62, 158, 103, 113,  58, 155, 100, },

  320. { 34, 199,  21, 186,  31, 196,  17, 182, },

  321. {144,  89, 131,  76, 141,  86, 127,  72, },

  322. {  0, 165,  41, 206,  10, 175,  52, 217, },

  323. {110,  55, 151,  96, 120,  65, 162, 107, },

  324. { 28, 193,  14, 179,  38, 203,  24, 189, },

  325. {138,  83, 124,  69, 148,  93, 134,  79, },

  326. {  7, 172,  48, 213,   3, 168,  45, 210, },

  327. };

  328. #elif 1

  329. // tries to correct a gamma of 1.5

  330. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220[8][8])={

  331. {  0, 143,  18, 200,   2, 156,  25, 215, },

  332. { 78,  28, 125,  64,  89,  36, 138,  74, },

  333. { 10, 180,   3, 161,  16, 195,   8, 175, },

  334. {109,  51,  93,  38, 121,  60, 105,  47, },

  335. {  1, 152,  23, 210,   0, 147,  20, 205, },

  336. { 85,  33, 134,  71,  81,  30, 130,  67, },

  337. { 14, 190,   6, 171,  12, 185,   5, 166, },

  338. {117,  57, 101,  44, 113,  54,  97,  41, },

  339. };

  340. #elif 1

  341. // tries to correct a gamma of 2.0

  342. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220[8][8])={

  343. {  0, 124,   8, 193,   0, 140,  12, 213, },

  344. { 55,  14, 104,  42,  66,  19, 119,  52, },

  345. {  3, 168,   1, 145,   6, 187,   3, 162, },

  346. { 86,  31,  70,  21,  99,  39,  82,  28, },

  347. {  0, 134,  11, 206,   0, 129,   9, 200, },

  348. { 62,  17, 114,  48,  58,  16, 109,  45, },

  349. {  5, 181,   2, 157,   4, 175,   1, 151, },

  350. { 95,  36,  78,  26,  90,  34,  74,  24, },

  351. };

  352. #else

  353. // tries to correct a gamma of 2.5

  354. DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220[8][8])={

  355. {  0, 107,   3, 187,   0, 125,   6, 212, },

  356. { 39,   7,  86,  28,  49,  11, 102,  36, },

  357. {  1, 158,   0, 131,   3, 180,   1, 151, },

  358. { 68,  19,  52,  12,  81,  25,  64,  17, },

  359. {  0, 119,   5, 203,   0, 113,   4, 195, },

  360. { 45,   9,  96,  33,  42,   8,  91,  30, },

  361. {  2, 172,   1, 144,   2, 165,   0, 137, },

  362. { 77,  23,  60,  15,  72,  21,  56,  14, },

  363. };

  364. #endif

  365. 

  366. const char *sws_format_name(enum PixelFormat format)

  367. {

  368.     switch (format) {

  369.     case PIX_FMT_YUV420P:

  370.         return "yuv420p";

  371.     case PIX_FMT_YUVA420P:

  372.         return "yuva420p";

  373.     case PIX_FMT_YUYV422:

  374.         return "yuyv422";

  375.     case PIX_FMT_RGB24:

  376.         return "rgb24";

  377.     case PIX_FMT_BGR24:

  378.         return "bgr24";

  379.     case PIX_FMT_YUV422P:

  380.         return "yuv422p";

  381.     case PIX_FMT_YUV444P:

  382.         return "yuv444p";

  383.     case PIX_FMT_RGB32:

  384.         return "rgb32";

  385.     case PIX_FMT_YUV410P:

  386.         return "yuv410p";

  387.     case PIX_FMT_YUV411P:

  388.         return "yuv411p";

  389.     case PIX_FMT_RGB565:

  390.         return "rgb565";

  391.     case PIX_FMT_RGB555:

  392.         return "rgb555";

  393.     case PIX_FMT_GRAY16BE:

  394.         return "gray16be";

  395.     case PIX_FMT_GRAY16LE:

  396.         return "gray16le";

  397.     case PIX_FMT_GRAY8:

  398.         return "gray8";

  399.     case PIX_FMT_MONOWHITE:

  400.         return "mono white";

  401.     case PIX_FMT_MONOBLACK:

  402.         return "mono black";

  403.     case PIX_FMT_PAL8:

  404.         return "Palette";

  405.     case PIX_FMT_YUVJ420P:

  406.         return "yuvj420p";

  407.     case PIX_FMT_YUVJ422P:

  408.         return "yuvj422p";

  409.     case PIX_FMT_YUVJ444P:

  410.         return "yuvj444p";

  411.     case PIX_FMT_XVMC_MPEG2_MC:

  412.         return "xvmc_mpeg2_mc";

  413.     case PIX_FMT_XVMC_MPEG2_IDCT:

  414.         return "xvmc_mpeg2_idct";

  415.     case PIX_FMT_UYVY422:

  416.         return "uyvy422";

  417.     case PIX_FMT_UYYVYY411:

  418.         return "uyyvyy411";

  419.     case PIX_FMT_RGB32_1:

  420.         return "rgb32x";

  421.     case PIX_FMT_BGR32_1:

  422.         return "bgr32x";

  423.     case PIX_FMT_BGR32:

  424.         return "bgr32";

  425.     case PIX_FMT_BGR565:

  426.         return "bgr565";

  427.     case PIX_FMT_BGR555:

  428.         return "bgr555";

  429.     case PIX_FMT_BGR8:

  430.         return "bgr8";

  431.     case PIX_FMT_BGR4:

  432.         return "bgr4";

  433.     case PIX_FMT_BGR4_BYTE:

  434.         return "bgr4 byte";

  435.     case PIX_FMT_RGB8:

  436.         return "rgb8";

  437.     case PIX_FMT_RGB4:

  438.         return "rgb4";

  439.     case PIX_FMT_RGB4_BYTE:

  440.         return "rgb4 byte";

  441.     case PIX_FMT_RGB48BE:

  442.         return "rgb48be";

  443.     case PIX_FMT_RGB48LE:

  444.         return "rgb48le";

  445.     case PIX_FMT_NV12:

  446.         return "nv12";

  447.     case PIX_FMT_NV21:

  448.         return "nv21";

  449.     case PIX_FMT_YUV440P:

  450.         return "yuv440p";

  451.     case PIX_FMT_VDPAU_H264:

  452.         return "vdpau_h264";

  453.     case PIX_FMT_VDPAU_MPEG1:

  454.         return "vdpau_mpeg1";

  455.     case PIX_FMT_VDPAU_MPEG2:

  456.         return "vdpau_mpeg2";

  457.     case PIX_FMT_VDPAU_WMV3:

  458.         return "vdpau_wmv3";

  459.     case PIX_FMT_VDPAU_VC1:

  460.         return "vdpau_vc1";

  461.     case PIX_FMT_YUV420PLE:

  462.         return "yuv420ple";

  463.     case PIX_FMT_YUV422PLE:

  464.         return "yuv422ple";

  465.     case PIX_FMT_YUV444PLE:

  466.         return "yuv444ple";

  467.     case PIX_FMT_YUV420PBE:

  468.         return "yuv420pbe";

  469.     case PIX_FMT_YUV422PBE:

  470.         return "yuv422pbe";

  471.     case PIX_FMT_YUV444PBE:

  472.         return "yuv444pbe";

  473.     default:

  474.         return "Unknown format";

  475.     }

  476. }

  477. 

  478. static av_always_inline void yuv2yuvX16inC_template(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  479.                                                     const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  480.                                                     const int16_t **alpSrc, uint16_t *dest, uint16_t *uDest, uint16_t *vDest, uint16_t *aDest,

  481.                                                     int dstW, int chrDstW, int big_endian)

  482. {

  483.     //FIXME Optimize (just quickly written not optimized..)

  484.     int i;

  485. 

  486.     for (i = 0; i < dstW; i++) {

  487.         int val = 1 << 10;

  488.         int j;

  489. 

  490.         for (j = 0; j < lumFilterSize; j++)

  491.             val += lumSrc[j][i] * lumFilter[j];

  492. 

  493.         if (big_endian) {

  494.             AV_WB16(&dest[i], av_clip_uint16(val >> 11));

  495.         } else {

  496.             AV_WL16(&dest[i], av_clip_uint16(val >> 11));

  497.         }

  498.     }

  499. 

  500.     if (uDest) {

  501.         for (i = 0; i < chrDstW; i++) {

  502.             int u = 1 << 10;

  503.             int v = 1 << 10;

  504.             int j;

  505. 

  506.             for (j = 0; j < chrFilterSize; j++) {

  507.                 u += chrSrc[j][i       ] * chrFilter[j];

  508.                 v += chrSrc[j][i + VOFW] * chrFilter[j];

  509.             }

  510. 

  511.             if (big_endian) {

  512.                 AV_WB16(&uDest[i], av_clip_uint16(u >> 11));

  513.                 AV_WB16(&vDest[i], av_clip_uint16(v >> 11));

  514.             } else {

  515.                 AV_WL16(&uDest[i], av_clip_uint16(u >> 11));

  516.                 AV_WL16(&vDest[i], av_clip_uint16(v >> 11));

  517.             }

  518.         }

  519.     }

  520. 

  521.     if (CONFIG_SWSCALE_ALPHA && aDest) {

  522.         for (i = 0; i < dstW; i++) {

  523.             int val = 1 << 10;

  524.             int j;

  525. 

  526.             for (j = 0; j < lumFilterSize; j++)

  527.                 val += alpSrc[j][i] * lumFilter[j];

  528. 

  529.             if (big_endian) {

  530.                 AV_WB16(&aDest[i], av_clip_uint16(val >> 11));

  531.             } else {

  532.                 AV_WL16(&aDest[i], av_clip_uint16(val >> 11));

  533.             }

  534.         }

  535.     }

  536. }

  537. 

  538. static inline void yuv2yuvX16inC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  539.                                  const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  540.                                  const int16_t **alpSrc, uint16_t *dest, uint16_t *uDest, uint16_t *vDest, uint16_t *aDest, int dstW, int chrDstW,

  541.                                  enum PixelFormat dstFormat)

  542. {

  543.     if (isBE(dstFormat)) {

  544.         yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,

  545.                                chrFilter, chrSrc, chrFilterSize,

  546.                                alpSrc,

  547.                                dest, uDest, vDest, aDest,

  548.                                dstW, chrDstW, 1);

  549.     } else {

  550.         yuv2yuvX16inC_template(lumFilter, lumSrc, lumFilterSize,

  551.                                chrFilter, chrSrc, chrFilterSize,

  552.                                alpSrc,

  553.                                dest, uDest, vDest, aDest,

  554.                                dstW, chrDstW, 0);

  555.     }

  556. }

  557. 

  558. static inline void yuv2yuvXinC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  559.                                const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  560.                                const int16_t **alpSrc, uint8_t *dest, uint8_t *uDest, uint8_t *vDest, uint8_t *aDest, int dstW, int chrDstW)

  561. {

  562.     //FIXME Optimize (just quickly written not optimized..)

  563.     int i;

  564.     for (i=0; i<dstW; i++) {

  565.         int val=1<<18;

  566.         int j;

  567.         for (j=0; j<lumFilterSize; j++)

  568.             val += lumSrc[j][i] * lumFilter[j];

  569. 

  570.         dest[i]= av_clip_uint8(val>>19);

  571.     }

  572. 

  573.     if (uDest)

  574.         for (i=0; i<chrDstW; i++) {

  575.             int u=1<<18;

  576.             int v=1<<18;

  577.             int j;

  578.             for (j=0; j<chrFilterSize; j++) {

  579.                 u += chrSrc[j][i] * chrFilter[j];

  580.                 v += chrSrc[j][i + VOFW] * chrFilter[j];

  581.             }

  582. 

  583.             uDest[i]= av_clip_uint8(u>>19);

  584.             vDest[i]= av_clip_uint8(v>>19);

  585.         }

  586. 

  587.     if (CONFIG_SWSCALE_ALPHA && aDest)

  588.         for (i=0; i<dstW; i++) {

  589.             int val=1<<18;

  590.             int j;

  591.             for (j=0; j<lumFilterSize; j++)

  592.                 val += alpSrc[j][i] * lumFilter[j];

  593. 

  594.             aDest[i]= av_clip_uint8(val>>19);

  595.         }

  596. 

  597. }

  598. 

  599. static inline void yuv2nv12XinC(const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  600.                                 const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  601.                                 uint8_t *dest, uint8_t *uDest, int dstW, int chrDstW, int dstFormat)

  602. {

  603.     //FIXME Optimize (just quickly written not optimized..)

  604.     int i;

  605.     for (i=0; i<dstW; i++) {

  606.         int val=1<<18;

  607.         int j;

  608.         for (j=0; j<lumFilterSize; j++)

  609.             val += lumSrc[j][i] * lumFilter[j];

  610. 

  611.         dest[i]= av_clip_uint8(val>>19);

  612.     }

  613. 

  614.     if (!uDest)

  615.         return;

  616. 

  617.     if (dstFormat == PIX_FMT_NV12)

  618.         for (i=0; i<chrDstW; i++) {

  619.             int u=1<<18;

  620.             int v=1<<18;

  621.             int j;

  622.             for (j=0; j<chrFilterSize; j++) {

  623.                 u += chrSrc[j][i] * chrFilter[j];

  624.                 v += chrSrc[j][i + VOFW] * chrFilter[j];

  625.             }

  626. 

  627.             uDest[2*i]= av_clip_uint8(u>>19);

  628.             uDest[2*i+1]= av_clip_uint8(v>>19);

  629.         }

  630.     else

  631.         for (i=0; i<chrDstW; i++) {

  632.             int u=1<<18;

  633.             int v=1<<18;

  634.             int j;

  635.             for (j=0; j<chrFilterSize; j++) {

  636.                 u += chrSrc[j][i] * chrFilter[j];

  637.                 v += chrSrc[j][i + VOFW] * chrFilter[j];

  638.             }

  639. 

  640.             uDest[2*i]= av_clip_uint8(v>>19);

  641.             uDest[2*i+1]= av_clip_uint8(u>>19);

  642.         }

  643. }

  644. 

  645. #define YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha) \

  646.     for (i=0; i<(dstW>>1); i++) {\

  647.         int j;\

  648.         int Y1 = 1<<18;\

  649.         int Y2 = 1<<18;\

  650.         int U  = 1<<18;\

  651.         int V  = 1<<18;\

  652.         int av_unused A1, A2;\

  653.         type av_unused *r, *b, *g;\

  654.         const int i2= 2*i;\

  655.         \

  656.         for (j=0; j<lumFilterSize; j++) {\

  657.             Y1 += lumSrc[j][i2] * lumFilter[j];\

  658.             Y2 += lumSrc[j][i2+1] * lumFilter[j];\

  659.         }\

  660.         for (j=0; j<chrFilterSize; j++) {\

  661.             U += chrSrc[j][i] * chrFilter[j];\

  662.             V += chrSrc[j][i+VOFW] * chrFilter[j];\

  663.         }\

  664.         Y1>>=19;\

  665.         Y2>>=19;\

  666.         U >>=19;\

  667.         V >>=19;\

  668.         if (alpha) {\

  669.             A1 = 1<<18;\

  670.             A2 = 1<<18;\

  671.             for (j=0; j<lumFilterSize; j++) {\

  672.                 A1 += alpSrc[j][i2  ] * lumFilter[j];\

  673.                 A2 += alpSrc[j][i2+1] * lumFilter[j];\

  674.             }\

  675.             A1>>=19;\

  676.             A2>>=19;\

  677.         }\

  678. 

  679. #define YSCALE_YUV_2_PACKEDX_C(type,alpha) \

  680.         YSCALE_YUV_2_PACKEDX_NOCLIP_C(type,alpha)\

  681.         if ((Y1|Y2|U|V)&256) {\

  682.             if (Y1>255)   Y1=255; \

  683.             else if (Y1<0)Y1=0;   \

  684.             if (Y2>255)   Y2=255; \

  685.             else if (Y2<0)Y2=0;   \

  686.             if (U>255)    U=255;  \

  687.             else if (U<0) U=0;    \

  688.             if (V>255)    V=255;  \

  689.             else if (V<0) V=0;    \

  690.         }\

  691.         if (alpha && ((A1|A2)&256)) {\

  692.             A1=av_clip_uint8(A1);\

  693.             A2=av_clip_uint8(A2);\

  694.         }

  695. 

  696. #define YSCALE_YUV_2_PACKEDX_FULL_C(rnd,alpha) \

  697.     for (i=0; i<dstW; i++) {\

  698.         int j;\

  699.         int Y = 0;\

  700.         int U = -128<<19;\

  701.         int V = -128<<19;\

  702.         int av_unused A;\

  703.         int R,G,B;\

  704.         \

  705.         for (j=0; j<lumFilterSize; j++) {\

  706.             Y += lumSrc[j][i     ] * lumFilter[j];\

  707.         }\

  708.         for (j=0; j<chrFilterSize; j++) {\

  709.             U += chrSrc[j][i     ] * chrFilter[j];\

  710.             V += chrSrc[j][i+VOFW] * chrFilter[j];\

  711.         }\

  712.         Y >>=10;\

  713.         U >>=10;\

  714.         V >>=10;\

  715.         if (alpha) {\

  716.             A = rnd;\

  717.             for (j=0; j<lumFilterSize; j++)\

  718.                 A += alpSrc[j][i     ] * lumFilter[j];\

  719.             A >>=19;\

  720.             if (A&256)\

  721.                 A = av_clip_uint8(A);\

  722.         }\

  723. 

  724. #define YSCALE_YUV_2_RGBX_FULL_C(rnd,alpha) \

  725.     YSCALE_YUV_2_PACKEDX_FULL_C(rnd>>3,alpha)\

  726.         Y-= c->yuv2rgb_y_offset;\

  727.         Y*= c->yuv2rgb_y_coeff;\

  728.         Y+= rnd;\

  729.         R= Y + V*c->yuv2rgb_v2r_coeff;\

  730.         G= Y + V*c->yuv2rgb_v2g_coeff + U*c->yuv2rgb_u2g_coeff;\

  731.         B= Y +                          U*c->yuv2rgb_u2b_coeff;\

  732.         if ((R|G|B)&(0xC0000000)) {\

  733.             if (R>=(256<<22))   R=(256<<22)-1; \

  734.             else if (R<0)R=0;   \

  735.             if (G>=(256<<22))   G=(256<<22)-1; \

  736.             else if (G<0)G=0;   \

  737.             if (B>=(256<<22))   B=(256<<22)-1; \

  738.             else if (B<0)B=0;   \

  739.         }\

  740. 

  741. 

  742. #define YSCALE_YUV_2_GRAY16_C \

  743.     for (i=0; i<(dstW>>1); i++) {\

  744.         int j;\

  745.         int Y1 = 1<<18;\

  746.         int Y2 = 1<<18;\

  747.         int U  = 1<<18;\

  748.         int V  = 1<<18;\

  749.         \

  750.         const int i2= 2*i;\

  751.         \

  752.         for (j=0; j<lumFilterSize; j++) {\

  753.             Y1 += lumSrc[j][i2] * lumFilter[j];\

  754.             Y2 += lumSrc[j][i2+1] * lumFilter[j];\

  755.         }\

  756.         Y1>>=11;\

  757.         Y2>>=11;\

  758.         if ((Y1|Y2|U|V)&65536) {\

  759.             if (Y1>65535)   Y1=65535; \

  760.             else if (Y1<0)Y1=0;   \

  761.             if (Y2>65535)   Y2=65535; \

  762.             else if (Y2<0)Y2=0;   \

  763.         }

  764. 

  765. #define YSCALE_YUV_2_RGBX_C(type,alpha) \

  766.     YSCALE_YUV_2_PACKEDX_C(type,alpha)  /* FIXME fix tables so that clipping is not needed and then use _NOCLIP*/\

  767.     r = (type *)c->table_rV[V];   \

  768.     g = (type *)(c->table_gU[U] + c->table_gV[V]); \

  769.     b = (type *)c->table_bU[U];   \

  770. 

  771. #define YSCALE_YUV_2_PACKED2_C(type,alpha)   \

  772.     for (i=0; i<(dstW>>1); i++) { \

  773.         const int i2= 2*i;       \

  774.         int Y1= (buf0[i2  ]*yalpha1+buf1[i2  ]*yalpha)>>19;           \

  775.         int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>19;           \

  776.         int U= (uvbuf0[i     ]*uvalpha1+uvbuf1[i     ]*uvalpha)>>19;  \

  777.         int V= (uvbuf0[i+VOFW]*uvalpha1+uvbuf1[i+VOFW]*uvalpha)>>19;  \

  778.         type av_unused *r, *b, *g;                                    \

  779.         int av_unused A1, A2;                                         \

  780.         if (alpha) {\

  781.             A1= (abuf0[i2  ]*yalpha1+abuf1[i2  ]*yalpha)>>19;         \

  782.             A2= (abuf0[i2+1]*yalpha1+abuf1[i2+1]*yalpha)>>19;         \

  783.         }\

  784. 

  785. #define YSCALE_YUV_2_GRAY16_2_C   \

  786.     for (i=0; i<(dstW>>1); i++) { \

  787.         const int i2= 2*i;       \

  788.         int Y1= (buf0[i2  ]*yalpha1+buf1[i2  ]*yalpha)>>11;           \

  789.         int Y2= (buf0[i2+1]*yalpha1+buf1[i2+1]*yalpha)>>11;           \

  790. 

  791. #define YSCALE_YUV_2_RGB2_C(type,alpha) \

  792.     YSCALE_YUV_2_PACKED2_C(type,alpha)\

  793.     r = (type *)c->table_rV[V];\

  794.     g = (type *)(c->table_gU[U] + c->table_gV[V]);\

  795.     b = (type *)c->table_bU[U];\

  796. 

  797. #define YSCALE_YUV_2_PACKED1_C(type,alpha) \

  798.     for (i=0; i<(dstW>>1); i++) {\

  799.         const int i2= 2*i;\

  800.         int Y1= buf0[i2  ]>>7;\

  801.         int Y2= buf0[i2+1]>>7;\

  802.         int U= (uvbuf1[i     ])>>7;\

  803.         int V= (uvbuf1[i+VOFW])>>7;\

  804.         type av_unused *r, *b, *g;\

  805.         int av_unused A1, A2;\

  806.         if (alpha) {\

  807.             A1= abuf0[i2  ]>>7;\

  808.             A2= abuf0[i2+1]>>7;\

  809.         }\

  810. 

  811. #define YSCALE_YUV_2_GRAY16_1_C \

  812.     for (i=0; i<(dstW>>1); i++) {\

  813.         const int i2= 2*i;\

  814.         int Y1= buf0[i2  ]<<1;\

  815.         int Y2= buf0[i2+1]<<1;\

  816. 

  817. #define YSCALE_YUV_2_RGB1_C(type,alpha) \

  818.     YSCALE_YUV_2_PACKED1_C(type,alpha)\

  819.     r = (type *)c->table_rV[V];\

  820.     g = (type *)(c->table_gU[U] + c->table_gV[V]);\

  821.     b = (type *)c->table_bU[U];\

  822. 

  823. #define YSCALE_YUV_2_PACKED1B_C(type,alpha) \

  824.     for (i=0; i<(dstW>>1); i++) {\

  825.         const int i2= 2*i;\

  826.         int Y1= buf0[i2  ]>>7;\

  827.         int Y2= buf0[i2+1]>>7;\

  828.         int U= (uvbuf0[i     ] + uvbuf1[i     ])>>8;\

  829.         int V= (uvbuf0[i+VOFW] + uvbuf1[i+VOFW])>>8;\

  830.         type av_unused *r, *b, *g;\

  831.         int av_unused A1, A2;\

  832.         if (alpha) {\

  833.             A1= abuf0[i2  ]>>7;\

  834.             A2= abuf0[i2+1]>>7;\

  835.         }\

  836. 

  837. #define YSCALE_YUV_2_RGB1B_C(type,alpha) \

  838.     YSCALE_YUV_2_PACKED1B_C(type,alpha)\

  839.     r = (type *)c->table_rV[V];\

  840.     g = (type *)(c->table_gU[U] + c->table_gV[V]);\

  841.     b = (type *)c->table_bU[U];\

  842. 

  843. #define YSCALE_YUV_2_MONO2_C \

  844.     const uint8_t * const d128=dither_8x8_220[y&7];\

  845.     uint8_t *g= c->table_gU[128] + c->table_gV[128];\

  846.     for (i=0; i<dstW-7; i+=8) {\

  847.         int acc;\

  848.         acc =       g[((buf0[i  ]*yalpha1+buf1[i  ]*yalpha)>>19) + d128[0]];\

  849.         acc+= acc + g[((buf0[i+1]*yalpha1+buf1[i+1]*yalpha)>>19) + d128[1]];\

  850.         acc+= acc + g[((buf0[i+2]*yalpha1+buf1[i+2]*yalpha)>>19) + d128[2]];\

  851.         acc+= acc + g[((buf0[i+3]*yalpha1+buf1[i+3]*yalpha)>>19) + d128[3]];\

  852.         acc+= acc + g[((buf0[i+4]*yalpha1+buf1[i+4]*yalpha)>>19) + d128[4]];\

  853.         acc+= acc + g[((buf0[i+5]*yalpha1+buf1[i+5]*yalpha)>>19) + d128[5]];\

  854.         acc+= acc + g[((buf0[i+6]*yalpha1+buf1[i+6]*yalpha)>>19) + d128[6]];\

  855.         acc+= acc + g[((buf0[i+7]*yalpha1+buf1[i+7]*yalpha)>>19) + d128[7]];\

  856.         ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\

  857.         dest++;\

  858.     }\

  859. 

  860. 

  861. #define YSCALE_YUV_2_MONOX_C \

  862.     const uint8_t * const d128=dither_8x8_220[y&7];\

  863.     uint8_t *g= c->table_gU[128] + c->table_gV[128];\

  864.     int acc=0;\

  865.     for (i=0; i<dstW-1; i+=2) {\

  866.         int j;\

  867.         int Y1=1<<18;\

  868.         int Y2=1<<18;\

  869. \

  870.         for (j=0; j<lumFilterSize; j++) {\

  871.             Y1 += lumSrc[j][i] * lumFilter[j];\

  872.             Y2 += lumSrc[j][i+1] * lumFilter[j];\

  873.         }\

  874.         Y1>>=19;\

  875.         Y2>>=19;\

  876.         if ((Y1|Y2)&256) {\

  877.             if (Y1>255)   Y1=255;\

  878.             else if (Y1<0)Y1=0;\

  879.             if (Y2>255)   Y2=255;\

  880.             else if (Y2<0)Y2=0;\

  881.         }\

  882.         acc+= acc + g[Y1+d128[(i+0)&7]];\

  883.         acc+= acc + g[Y2+d128[(i+1)&7]];\

  884.         if ((i&7)==6) {\

  885.             ((uint8_t*)dest)[0]= c->dstFormat == PIX_FMT_MONOBLACK ? acc : ~acc;\

  886.             dest++;\

  887.         }\

  888.     }

  889. 

  890. 

  891. #define YSCALE_YUV_2_ANYRGB_C(func, func2, func_g16, func_monoblack)\

  892.     switch(c->dstFormat) {\

  893.     case PIX_FMT_RGB48BE:\

  894.     case PIX_FMT_RGB48LE:\

  895.         func(uint8_t,0)\

  896.             ((uint8_t*)dest)[ 0]= r[Y1];\

  897.             ((uint8_t*)dest)[ 1]= r[Y1];\

  898.             ((uint8_t*)dest)[ 2]= g[Y1];\

  899.             ((uint8_t*)dest)[ 3]= g[Y1];\

  900.             ((uint8_t*)dest)[ 4]= b[Y1];\

  901.             ((uint8_t*)dest)[ 5]= b[Y1];\

  902.             ((uint8_t*)dest)[ 6]= r[Y2];\

  903.             ((uint8_t*)dest)[ 7]= r[Y2];\

  904.             ((uint8_t*)dest)[ 8]= g[Y2];\

  905.             ((uint8_t*)dest)[ 9]= g[Y2];\

  906.             ((uint8_t*)dest)[10]= b[Y2];\

  907.             ((uint8_t*)dest)[11]= b[Y2];\

  908.             dest+=12;\

  909.         }\

  910.         break;\

  911.     case PIX_FMT_RGBA:\

  912.     case PIX_FMT_BGRA:\

  913.         if (CONFIG_SMALL) {\

  914.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;\

  915.             func(uint32_t,needAlpha)\

  916.                 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (needAlpha ? (A1<<24) : 0);\

  917.                 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (needAlpha ? (A2<<24) : 0);\

  918.             }\

  919.         } else {\

  920.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {\

  921.                 func(uint32_t,1)\

  922.                     ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (A1<<24);\

  923.                     ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (A2<<24);\

  924.                 }\

  925.             } else {\

  926.                 func(uint32_t,0)\

  927.                     ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\

  928.                     ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\

  929.                 }\

  930.             }\

  931.         }\

  932.         break;\

  933.     case PIX_FMT_ARGB:\

  934.     case PIX_FMT_ABGR:\

  935.         if (CONFIG_SMALL) {\

  936.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;\

  937.             func(uint32_t,needAlpha)\

  938.                 ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + (needAlpha ? A1 : 0);\

  939.                 ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + (needAlpha ? A2 : 0);\

  940.             }\

  941.         } else {\

  942.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {\

  943.                 func(uint32_t,1)\

  944.                     ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1] + A1;\

  945.                     ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2] + A2;\

  946.                 }\

  947.             } else {\

  948.                 func(uint32_t,0)\

  949.                     ((uint32_t*)dest)[i2+0]= r[Y1] + g[Y1] + b[Y1];\

  950.                     ((uint32_t*)dest)[i2+1]= r[Y2] + g[Y2] + b[Y2];\

  951.                 }\

  952.             }\

  953.         }                \

  954.         break;\

  955.     case PIX_FMT_RGB24:\

  956.         func(uint8_t,0)\

  957.             ((uint8_t*)dest)[0]= r[Y1];\

  958.             ((uint8_t*)dest)[1]= g[Y1];\

  959.             ((uint8_t*)dest)[2]= b[Y1];\

  960.             ((uint8_t*)dest)[3]= r[Y2];\

  961.             ((uint8_t*)dest)[4]= g[Y2];\

  962.             ((uint8_t*)dest)[5]= b[Y2];\

  963.             dest+=6;\

  964.         }\

  965.         break;\

  966.     case PIX_FMT_BGR24:\

  967.         func(uint8_t,0)\

  968.             ((uint8_t*)dest)[0]= b[Y1];\

  969.             ((uint8_t*)dest)[1]= g[Y1];\

  970.             ((uint8_t*)dest)[2]= r[Y1];\

  971.             ((uint8_t*)dest)[3]= b[Y2];\

  972.             ((uint8_t*)dest)[4]= g[Y2];\

  973.             ((uint8_t*)dest)[5]= r[Y2];\

  974.             dest+=6;\

  975.         }\

  976.         break;\

  977.     case PIX_FMT_RGB565:\

  978.     case PIX_FMT_BGR565:\

  979.         {\

  980.             const int dr1= dither_2x2_8[y&1    ][0];\

  981.             const int dg1= dither_2x2_4[y&1    ][0];\

  982.             const int db1= dither_2x2_8[(y&1)^1][0];\

  983.             const int dr2= dither_2x2_8[y&1    ][1];\

  984.             const int dg2= dither_2x2_4[y&1    ][1];\

  985.             const int db2= dither_2x2_8[(y&1)^1][1];\

  986.             func(uint16_t,0)\

  987.                 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\

  988.                 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\

  989.             }\

  990.         }\

  991.         break;\

  992.     case PIX_FMT_RGB555:\

  993.     case PIX_FMT_BGR555:\

  994.         {\

  995.             const int dr1= dither_2x2_8[y&1    ][0];\

  996.             const int dg1= dither_2x2_8[y&1    ][1];\

  997.             const int db1= dither_2x2_8[(y&1)^1][0];\

  998.             const int dr2= dither_2x2_8[y&1    ][1];\

  999.             const int dg2= dither_2x2_8[y&1    ][0];\

  1000.             const int db2= dither_2x2_8[(y&1)^1][1];\

  1001.             func(uint16_t,0)\

  1002.                 ((uint16_t*)dest)[i2+0]= r[Y1+dr1] + g[Y1+dg1] + b[Y1+db1];\

  1003.                 ((uint16_t*)dest)[i2+1]= r[Y2+dr2] + g[Y2+dg2] + b[Y2+db2];\

  1004.             }\

  1005.         }\

  1006.         break;\

  1007.     case PIX_FMT_RGB8:\

  1008.     case PIX_FMT_BGR8:\

  1009.         {\

  1010.             const uint8_t * const d64= dither_8x8_73[y&7];\

  1011.             const uint8_t * const d32= dither_8x8_32[y&7];\

  1012.             func(uint8_t,0)\

  1013.                 ((uint8_t*)dest)[i2+0]= r[Y1+d32[(i2+0)&7]] + g[Y1+d32[(i2+0)&7]] + b[Y1+d64[(i2+0)&7]];\

  1014.                 ((uint8_t*)dest)[i2+1]= r[Y2+d32[(i2+1)&7]] + g[Y2+d32[(i2+1)&7]] + b[Y2+d64[(i2+1)&7]];\

  1015.             }\

  1016.         }\

  1017.         break;\

  1018.     case PIX_FMT_RGB4:\

  1019.     case PIX_FMT_BGR4:\

  1020.         {\

  1021.             const uint8_t * const d64= dither_8x8_73 [y&7];\

  1022.             const uint8_t * const d128=dither_8x8_220[y&7];\

  1023.             func(uint8_t,0)\

  1024.                 ((uint8_t*)dest)[i]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]]\

  1025.                                  + ((r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]])<<4);\

  1026.             }\

  1027.         }\

  1028.         break;\

  1029.     case PIX_FMT_RGB4_BYTE:\

  1030.     case PIX_FMT_BGR4_BYTE:\

  1031.         {\

  1032.             const uint8_t * const d64= dither_8x8_73 [y&7];\

  1033.             const uint8_t * const d128=dither_8x8_220[y&7];\

  1034.             func(uint8_t,0)\

  1035.                 ((uint8_t*)dest)[i2+0]= r[Y1+d128[(i2+0)&7]] + g[Y1+d64[(i2+0)&7]] + b[Y1+d128[(i2+0)&7]];\

  1036.                 ((uint8_t*)dest)[i2+1]= r[Y2+d128[(i2+1)&7]] + g[Y2+d64[(i2+1)&7]] + b[Y2+d128[(i2+1)&7]];\

  1037.             }\

  1038.         }\

  1039.         break;\

  1040.     case PIX_FMT_MONOBLACK:\

  1041.     case PIX_FMT_MONOWHITE:\

  1042.         {\

  1043.             func_monoblack\

  1044.         }\

  1045.         break;\

  1046.     case PIX_FMT_YUYV422:\

  1047.         func2\

  1048.             ((uint8_t*)dest)[2*i2+0]= Y1;\

  1049.             ((uint8_t*)dest)[2*i2+1]= U;\

  1050.             ((uint8_t*)dest)[2*i2+2]= Y2;\

  1051.             ((uint8_t*)dest)[2*i2+3]= V;\

  1052.         }                \

  1053.         break;\

  1054.     case PIX_FMT_UYVY422:\

  1055.         func2\

  1056.             ((uint8_t*)dest)[2*i2+0]= U;\

  1057.             ((uint8_t*)dest)[2*i2+1]= Y1;\

  1058.             ((uint8_t*)dest)[2*i2+2]= V;\

  1059.             ((uint8_t*)dest)[2*i2+3]= Y2;\

  1060.         }                \

  1061.         break;\

  1062.     case PIX_FMT_GRAY16BE:\

  1063.         func_g16\

  1064.             ((uint8_t*)dest)[2*i2+0]= Y1>>8;\

  1065.             ((uint8_t*)dest)[2*i2+1]= Y1;\

  1066.             ((uint8_t*)dest)[2*i2+2]= Y2>>8;\

  1067.             ((uint8_t*)dest)[2*i2+3]= Y2;\

  1068.         }                \

  1069.         break;\

  1070.     case PIX_FMT_GRAY16LE:\

  1071.         func_g16\

  1072.             ((uint8_t*)dest)[2*i2+0]= Y1;\

  1073.             ((uint8_t*)dest)[2*i2+1]= Y1>>8;\

  1074.             ((uint8_t*)dest)[2*i2+2]= Y2;\

  1075.             ((uint8_t*)dest)[2*i2+3]= Y2>>8;\

  1076.         }                \

  1077.         break;\

  1078.     }\

  1079. 

  1080. 

  1081. static inline void yuv2packedXinC(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  1082.                                   const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  1083.                                   const int16_t **alpSrc, uint8_t *dest, int dstW, int y)

  1084. {

  1085.     int i;

  1086.     YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGBX_C, YSCALE_YUV_2_PACKEDX_C(void,0), YSCALE_YUV_2_GRAY16_C, YSCALE_YUV_2_MONOX_C)

  1087. }

  1088. 

  1089. static inline void yuv2rgbXinC_full(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,

  1090.                                     const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,

  1091.                                     const int16_t **alpSrc, uint8_t *dest, int dstW, int y)

  1092. {

  1093.     int i;

  1094.     int step= fmt_depth(c->dstFormat)/8;

  1095.     int aidx= 3;

  1096. 

  1097.     switch(c->dstFormat) {

  1098.     case PIX_FMT_ARGB:

  1099.         dest++;

  1100.         aidx= 0;

  1101.     case PIX_FMT_RGB24:

  1102.         aidx--;

  1103.     case PIX_FMT_RGBA:

  1104.         if (CONFIG_SMALL) {

  1105.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  1106.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  1107.                 dest[aidx]= needAlpha ? A : 255;

  1108.                 dest[0]= R>>22;

  1109.                 dest[1]= G>>22;

  1110.                 dest[2]= B>>22;

  1111.                 dest+= step;

  1112.             }

  1113.         } else {

  1114.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {

  1115.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  1116.                     dest[aidx]= A;

  1117.                     dest[0]= R>>22;

  1118.                     dest[1]= G>>22;

  1119.                     dest[2]= B>>22;

  1120.                     dest+= step;

  1121.                 }

  1122.             } else {

  1123.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  1124.                     dest[aidx]= 255;

  1125.                     dest[0]= R>>22;

  1126.                     dest[1]= G>>22;

  1127.                     dest[2]= B>>22;

  1128.                     dest+= step;

  1129.                 }

  1130.             }

  1131.         }

  1132.         break;

  1133.     case PIX_FMT_ABGR:

  1134.         dest++;

  1135.         aidx= 0;

  1136.     case PIX_FMT_BGR24:

  1137.         aidx--;

  1138.     case PIX_FMT_BGRA:

  1139.         if (CONFIG_SMALL) {

  1140.             int needAlpha = CONFIG_SWSCALE_ALPHA && c->alpPixBuf;

  1141.             YSCALE_YUV_2_RGBX_FULL_C(1<<21, needAlpha)

  1142.                 dest[aidx]= needAlpha ? A : 255;

  1143.                 dest[0]= B>>22;

  1144.                 dest[1]= G>>22;

  1145.                 dest[2]= R>>22;

  1146.                 dest+= step;

  1147.             }

  1148.         } else {

  1149.             if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {

  1150.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 1)

  1151.                     dest[aidx]= A;

  1152.                     dest[0]= B>>22;

  1153.                     dest[1]= G>>22;

  1154.                     dest[2]= R>>22;

  1155.                     dest+= step;

  1156.                 }

  1157.             } else {

  1158.                 YSCALE_YUV_2_RGBX_FULL_C(1<<21, 0)

  1159.                     dest[aidx]= 255;

  1160.                     dest[0]= B>>22;

  1161.                     dest[1]= G>>22;

  1162.                     dest[2]= R>>22;

  1163.                     dest+= step;

  1164.                 }

  1165.             }

  1166.         }

  1167.         break;

  1168.     default:

  1169.         assert(0);

  1170.     }

  1171. }

  1172. 

  1173. static void fillPlane(uint8_t* plane, int stride, int width, int height, int y, uint8_t val)

  1174. {

  1175.     int i;

  1176.     uint8_t *ptr = plane + stride*y;

  1177.     for (i=0; i<height; i++) {

  1178.         memset(ptr, val, width);

  1179.         ptr += stride;

  1180.     }

  1181. }

  1182. 

  1183. static inline void rgb48ToY(uint8_t *dst, const uint8_t *src, int width)

  1184. {

  1185.     int i;

  1186.     for (i = 0; i < width; i++) {

  1187.         int r = src[i*6+0];

  1188.         int g = src[i*6+2];

  1189.         int b = src[i*6+4];

  1190. 

  1191.         dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1192.     }

  1193. }

  1194. 

  1195. static inline void rgb48ToUV(uint8_t *dstU, uint8_t *dstV,

  1196.                              uint8_t *src1, uint8_t *src2, int width)

  1197. {

  1198.     int i;

  1199.     assert(src1==src2);

  1200.     for (i = 0; i < width; i++) {

  1201.         int r = src1[6*i + 0];

  1202.         int g = src1[6*i + 2];

  1203.         int b = src1[6*i + 4];

  1204. 

  1205.         dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1206.         dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;

  1207.     }

  1208. }

  1209. 

  1210. static inline void rgb48ToUV_half(uint8_t *dstU, uint8_t *dstV,

  1211.                                   uint8_t *src1, uint8_t *src2, int width)

  1212. {

  1213.     int i;

  1214.     assert(src1==src2);

  1215.     for (i = 0; i < width; i++) {

  1216.         int r= src1[12*i + 0] + src1[12*i + 6];

  1217.         int g= src1[12*i + 2] + src1[12*i + 8];

  1218.         int b= src1[12*i + 4] + src1[12*i + 10];

  1219. 

  1220.         dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1221.         dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);

  1222.     }

  1223. }

  1224. 

  1225. #define BGR2Y(type, name, shr, shg, shb, maskr, maskg, maskb, RY, GY, BY, S)\

  1226. static inline void name(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)\

  1227. {\

  1228.     int i;\

  1229.     for (i=0; i<width; i++) {\

  1230.         int b= (((const type*)src)[i]>>shb)&maskb;\

  1231.         int g= (((const type*)src)[i]>>shg)&maskg;\

  1232.         int r= (((const type*)src)[i]>>shr)&maskr;\

  1233. \

  1234.         dst[i]= (((RY)*r + (GY)*g + (BY)*b + (33<<((S)-1)))>>(S));\

  1235.     }\

  1236. }

  1237. 

  1238. BGR2Y(uint32_t, bgr32ToY,16, 0, 0, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1239. BGR2Y(uint32_t, rgb32ToY, 0, 0,16, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)

  1240. BGR2Y(uint16_t, bgr16ToY, 0, 0, 0, 0x001F, 0x07E0, 0xF800, RY<<11, GY<<5, BY    , RGB2YUV_SHIFT+8)

  1241. BGR2Y(uint16_t, bgr15ToY, 0, 0, 0, 0x001F, 0x03E0, 0x7C00, RY<<10, GY<<5, BY    , RGB2YUV_SHIFT+7)

  1242. BGR2Y(uint16_t, rgb16ToY, 0, 0, 0, 0xF800, 0x07E0, 0x001F, RY    , GY<<5, BY<<11, RGB2YUV_SHIFT+8)

  1243. BGR2Y(uint16_t, rgb15ToY, 0, 0, 0, 0x7C00, 0x03E0, 0x001F, RY    , GY<<5, BY<<10, RGB2YUV_SHIFT+7)

  1244. 

  1245. static inline void abgrToA(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1246. {

  1247.     int i;

  1248.     for (i=0; i<width; i++) {

  1249.         dst[i]= src[4*i];

  1250.     }

  1251. }

  1252. 

  1253. #define BGR2UV(type, name, shr, shg, shb, maska, maskr, maskg, maskb, RU, GU, BU, RV, GV, BV, S)\

  1254. static inline void name(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1255. {\

  1256.     int i;\

  1257.     for (i=0; i<width; i++) {\

  1258.         int b= (((const type*)src)[i]&maskb)>>shb;\

  1259.         int g= (((const type*)src)[i]&maskg)>>shg;\

  1260.         int r= (((const type*)src)[i]&maskr)>>shr;\

  1261. \

  1262.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<((S)-1)))>>(S);\

  1263.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<((S)-1)))>>(S);\

  1264.     }\

  1265. }\

  1266. static inline void name ## _half(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, const uint8_t *dummy, long width, uint32_t *unused)\

  1267. {\

  1268.     int i;\

  1269.     for (i=0; i<width; i++) {\

  1270.         int pix0= ((const type*)src)[2*i+0];\

  1271.         int pix1= ((const type*)src)[2*i+1];\

  1272.         int g= (pix0&~(maskr|maskb))+(pix1&~(maskr|maskb));\

  1273.         int b= ((pix0+pix1-g)&(maskb|(2*maskb)))>>shb;\

  1274.         int r= ((pix0+pix1-g)&(maskr|(2*maskr)))>>shr;\

  1275.         g&= maskg|(2*maskg);\

  1276. \

  1277.         g>>=shg;\

  1278. \

  1279.         dstU[i]= ((RU)*r + (GU)*g + (BU)*b + (257<<(S)))>>((S)+1);\

  1280.         dstV[i]= ((RV)*r + (GV)*g + (BV)*b + (257<<(S)))>>((S)+1);\

  1281.     }\

  1282. }

  1283. 

  1284. BGR2UV(uint32_t, bgr32ToUV,16, 0, 0, 0xFF000000, 0xFF0000, 0xFF00,   0x00FF, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1285. BGR2UV(uint32_t, rgb32ToUV, 0, 0,16, 0xFF000000,   0x00FF, 0xFF00, 0xFF0000, RU<< 8, GU   , BU<< 8, RV<< 8, GV   , BV<< 8, RGB2YUV_SHIFT+8)

  1286. BGR2UV(uint16_t, bgr16ToUV, 0, 0, 0,          0,   0x001F, 0x07E0,   0xF800, RU<<11, GU<<5, BU    , RV<<11, GV<<5, BV    , RGB2YUV_SHIFT+8)

  1287. BGR2UV(uint16_t, bgr15ToUV, 0, 0, 0,          0,   0x001F, 0x03E0,   0x7C00, RU<<10, GU<<5, BU    , RV<<10, GV<<5, BV    , RGB2YUV_SHIFT+7)

  1288. BGR2UV(uint16_t, rgb16ToUV, 0, 0, 0,          0,   0xF800, 0x07E0,   0x001F, RU    , GU<<5, BU<<11, RV    , GV<<5, BV<<11, RGB2YUV_SHIFT+8)

  1289. BGR2UV(uint16_t, rgb15ToUV, 0, 0, 0,          0,   0x7C00, 0x03E0,   0x001F, RU    , GU<<5, BU<<10, RV    , GV<<5, BV<<10, RGB2YUV_SHIFT+7)

  1290. 

  1291. static inline void palToY(uint8_t *dst, const uint8_t *src, long width, uint32_t *pal)

  1292. {

  1293.     int i;

  1294.     for (i=0; i<width; i++) {

  1295.         int d= src[i];

  1296. 

  1297.         dst[i]= pal[d] & 0xFF;

  1298.     }

  1299. }

  1300. 

  1301. static inline void palToUV(uint8_t *dstU, uint8_t *dstV,

  1302.                            const uint8_t *src1, const uint8_t *src2,

  1303.                            long width, uint32_t *pal)

  1304. {

  1305.     int i;

  1306.     assert(src1 == src2);

  1307.     for (i=0; i<width; i++) {

  1308.         int p= pal[src1[i]];

  1309. 

  1310.         dstU[i]= p>>8;

  1311.         dstV[i]= p>>16;

  1312.     }

  1313. }

  1314. 

  1315. static inline void monowhite2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1316. {

  1317.     int i, j;

  1318.     for (i=0; i<width/8; i++) {

  1319.         int d= ~src[i];

  1320.         for(j=0; j<8; j++)

  1321.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1322.     }

  1323. }

  1324. 

  1325. static inline void monoblack2Y(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)

  1326. {

  1327.     int i, j;

  1328.     for (i=0; i<width/8; i++) {

  1329.         int d= src[i];

  1330.         for(j=0; j<8; j++)

  1331.             dst[8*i+j]= ((d>>(7-j))&1)*255;

  1332.     }

  1333. }

  1334. 

  1335. 

  1336. //Note: we have C, MMX, MMX2, 3DNOW versions, there is no 3DNOW+MMX2 one

  1337. //Plain C versions

  1338. #if ((!HAVE_MMX || !CONFIG_GPL) && !HAVE_ALTIVEC) || CONFIG_RUNTIME_CPUDETECT

  1339. #define COMPILE_C

  1340. #endif

  1341. 

  1342. #if ARCH_PPC

  1343. #if HAVE_ALTIVEC || CONFIG_RUNTIME_CPUDETECT

  1344. #define COMPILE_ALTIVEC

  1345. #endif

  1346. #endif //ARCH_PPC

  1347. 

  1348. #if ARCH_X86

  1349. 

  1350. #if ((HAVE_MMX && !HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1351. #define COMPILE_MMX

  1352. #endif

  1353. 

  1354. #if (HAVE_MMX2 || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1355. #define COMPILE_MMX2

  1356. #endif

  1357. 

  1358. #if ((HAVE_AMD3DNOW && !HAVE_MMX2) || CONFIG_RUNTIME_CPUDETECT) && CONFIG_GPL

  1359. #define COMPILE_3DNOW

  1360. #endif

  1361. #endif //ARCH_X86

  1362. 

  1363. #define COMPILE_TEMPLATE_MMX 0

  1364. #define COMPILE_TEMPLATE_MMX2 0

  1365. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1366. #define COMPILE_TEMPLATE_ALTIVEC 0

  1367. 

  1368. #ifdef COMPILE_C

  1369. #define RENAME(a) a ## _C

  1370. #include "swscale_template.c"

  1371. #endif

  1372. 

  1373. #ifdef COMPILE_ALTIVEC

  1374. #undef RENAME

  1375. #undef COMPILE_TEMPLATE_ALTIVEC

  1376. #define COMPILE_TEMPLATE_ALTIVEC 1

  1377. #define RENAME(a) a ## _altivec

  1378. #include "swscale_template.c"

  1379. #endif

  1380. 

  1381. #if ARCH_X86

  1382. 

  1383. //MMX versions

  1384. #ifdef COMPILE_MMX

  1385. #undef RENAME

  1386. #undef COMPILE_TEMPLATE_MMX

  1387. #undef COMPILE_TEMPLATE_MMX2

  1388. #undef COMPILE_TEMPLATE_AMD3DNOW

  1389. #define COMPILE_TEMPLATE_MMX 1

  1390. #define COMPILE_TEMPLATE_MMX2 0

  1391. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1392. #define RENAME(a) a ## _MMX

  1393. #include "swscale_template.c"

  1394. #endif

  1395. 

  1396. //MMX2 versions

  1397. #ifdef COMPILE_MMX2

  1398. #undef RENAME

  1399. #undef COMPILE_TEMPLATE_MMX

  1400. #undef COMPILE_TEMPLATE_MMX2

  1401. #undef COMPILE_TEMPLATE_AMD3DNOW

  1402. #define COMPILE_TEMPLATE_MMX 1

  1403. #define COMPILE_TEMPLATE_MMX2 1

  1404. #define COMPILE_TEMPLATE_AMD3DNOW 0

  1405. #define RENAME(a) a ## _MMX2

  1406. #include "swscale_template.c"

  1407. #endif

  1408. 

  1409. //3DNOW versions

  1410. #ifdef COMPILE_3DNOW

  1411. #undef RENAME

  1412. #undef COMPILE_TEMPLATE_MMX

  1413. #undef COMPILE_TEMPLATE_MMX2

  1414. #undef COMPILE_TEMPLATE_AMD3DNOW

  1415. #define COMPILE_TEMPLATE_MMX 1

  1416. #define COMPILE_TEMPLATE_MMX2 0

  1417. #define COMPILE_TEMPLATE_AMD3DNOW 1

  1418. #define RENAME(a) a ## _3DNow

  1419. #include "swscale_template.c"

  1420. #endif

  1421. 

  1422. #endif //ARCH_X86

  1423. 

  1424. static double getSplineCoeff(double a, double b, double c, double d, double dist)

  1425. {

  1426. //    printf("%f %f %f %f %f\n", a,b,c,d,dist);

  1427.     if (dist<=1.0) return ((d*dist + c)*dist + b)*dist +a;

  1428.     else           return getSplineCoeff(        0.0,

  1429.                                           b+ 2.0*c + 3.0*d,

  1430.                                                  c + 3.0*d,

  1431.                                          -b- 3.0*c - 6.0*d,

  1432.                                          dist-1.0);

  1433. }

  1434. 

  1435. static inline int initFilter(int16_t **outFilter, int16_t **filterPos, int *outFilterSize, int xInc,

  1436.                              int srcW, int dstW, int filterAlign, int one, int flags,

  1437.                              SwsVector *srcFilter, SwsVector *dstFilter, double param[2])

  1438. {

  1439.     int i;

  1440.     int filterSize;

  1441.     int filter2Size;

  1442.     int minFilterSize;

  1443.     int64_t *filter=NULL;

  1444.     int64_t *filter2=NULL;

  1445.     const int64_t fone= 1LL<<54;

  1446.     int ret= -1;

  1447. #if ARCH_X86

  1448.     if (flags & SWS_CPU_CAPS_MMX)

  1449.         __asm__ volatile("emms\n\t"::: "memory"); //FIXME this should not be required but it IS (even for non-MMX versions)

  1450. #endif

  1451. 

  1452.     // NOTE: the +1 is for the MMX scaler which reads over the end

  1453.     *filterPos = av_malloc((dstW+1)*sizeof(int16_t));

  1454. 

  1455.     if (FFABS(xInc - 0x10000) <10) { // unscaled

  1456.         int i;

  1457.         filterSize= 1;

  1458.         filter= av_mallocz(dstW*sizeof(*filter)*filterSize);

  1459. 

  1460.         for (i=0; i<dstW; i++) {

  1461.             filter[i*filterSize]= fone;

  1462.             (*filterPos)[i]=i;

  1463.         }

  1464. 

  1465.     } else if (flags&SWS_POINT) { // lame looking point sampling mode

  1466.         int i;

  1467.         int xDstInSrc;

  1468.         filterSize= 1;

  1469.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1470. 

  1471.         xDstInSrc= xInc/2 - 0x8000;

  1472.         for (i=0; i<dstW; i++) {

  1473.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1474. 

  1475.             (*filterPos)[i]= xx;

  1476.             filter[i]= fone;

  1477.             xDstInSrc+= xInc;

  1478.         }

  1479.     } else if ((xInc <= (1<<16) && (flags&SWS_AREA)) || (flags&SWS_FAST_BILINEAR)) { // bilinear upscale

  1480.         int i;

  1481.         int xDstInSrc;

  1482.         filterSize= 2;

  1483.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1484. 

  1485.         xDstInSrc= xInc/2 - 0x8000;

  1486.         for (i=0; i<dstW; i++) {

  1487.             int xx= (xDstInSrc - ((filterSize-1)<<15) + (1<<15))>>16;

  1488.             int j;

  1489. 

  1490.             (*filterPos)[i]= xx;

  1491.             //bilinear upscale / linear interpolate / area averaging

  1492.             for (j=0; j<filterSize; j++) {

  1493.                 int64_t coeff= fone - FFABS((xx<<16) - xDstInSrc)*(fone>>16);

  1494.                 if (coeff<0) coeff=0;

  1495.                 filter[i*filterSize + j]= coeff;

  1496.                 xx++;

  1497.             }

  1498.             xDstInSrc+= xInc;

  1499.         }

  1500.     } else {

  1501.         int xDstInSrc;

  1502.         int sizeFactor;

  1503. 

  1504.         if      (flags&SWS_BICUBIC)      sizeFactor=  4;

  1505.         else if (flags&SWS_X)            sizeFactor=  8;

  1506.         else if (flags&SWS_AREA)         sizeFactor=  1; //downscale only, for upscale it is bilinear

  1507.         else if (flags&SWS_GAUSS)        sizeFactor=  8;   // infinite ;)

  1508.         else if (flags&SWS_LANCZOS)      sizeFactor= param[0] != SWS_PARAM_DEFAULT ? ceil(2*param[0]) : 6;

  1509.         else if (flags&SWS_SINC)         sizeFactor= 20; // infinite ;)

  1510.         else if (flags&SWS_SPLINE)       sizeFactor= 20;  // infinite ;)

  1511.         else if (flags&SWS_BILINEAR)     sizeFactor=  2;

  1512.         else {

  1513.             sizeFactor= 0; //GCC warning killer

  1514.             assert(0);

  1515.         }

  1516. 

  1517.         if (xInc <= 1<<16)      filterSize= 1 + sizeFactor; // upscale

  1518.         else                    filterSize= 1 + (sizeFactor*srcW + dstW - 1)/ dstW;

  1519. 

  1520.         if (filterSize > srcW-2) filterSize=srcW-2;

  1521. 

  1522.         filter= av_malloc(dstW*sizeof(*filter)*filterSize);

  1523. 

  1524.         xDstInSrc= xInc - 0x10000;

  1525.         for (i=0; i<dstW; i++) {

  1526.             int xx= (xDstInSrc - ((filterSize-2)<<16)) / (1<<17);

  1527.             int j;

  1528.             (*filterPos)[i]= xx;

  1529.             for (j=0; j<filterSize; j++) {

  1530.                 int64_t d= ((int64_t)FFABS((xx<<17) - xDstInSrc))<<13;

  1531.                 double floatd;

  1532.                 int64_t coeff;

  1533. 

  1534.                 if (xInc > 1<<16)

  1535.                     d= d*dstW/srcW;

  1536.                 floatd= d * (1.0/(1<<30));

  1537. 

  1538.                 if (flags & SWS_BICUBIC) {

  1539.                     int64_t B= (param[0] != SWS_PARAM_DEFAULT ? param[0] :   0) * (1<<24);

  1540.                     int64_t C= (param[1] != SWS_PARAM_DEFAULT ? param[1] : 0.6) * (1<<24);

  1541.                     int64_t dd = ( d*d)>>30;

  1542.                     int64_t ddd= (dd*d)>>30;

  1543. 

  1544.                     if      (d < 1LL<<30)

  1545.                         coeff = (12*(1<<24)-9*B-6*C)*ddd + (-18*(1<<24)+12*B+6*C)*dd + (6*(1<<24)-2*B)*(1<<30);

  1546.                     else if (d < 1LL<<31)

  1547.                         coeff = (-B-6*C)*ddd + (6*B+30*C)*dd + (-12*B-48*C)*d + (8*B+24*C)*(1<<30);

  1548.                     else

  1549.                         coeff=0.0;

  1550.                     coeff *= fone>>(30+24);

  1551.                 }

  1552. /*                else if (flags & SWS_X) {

  1553.                     double p= param ? param*0.01 : 0.3;

  1554.                     coeff = d ? sin(d*PI)/(d*PI) : 1.0;

  1555.                     coeff*= pow(2.0, - p*d*d);

  1556.                 }*/

  1557.                 else if (flags & SWS_X) {

  1558.                     double A= param[0] != SWS_PARAM_DEFAULT ? param[0] : 1.0;

  1559.                     double c;

  1560. 

  1561.                     if (floatd<1.0)

  1562.                         c = cos(floatd*PI);

  1563.                     else

  1564.                         c=-1.0;

  1565.                     if (c<0.0)      c= -pow(-c, A);

  1566.                     else            c=  pow( c, A);

  1567.                     coeff= (c*0.5 + 0.5)*fone;

  1568.                 } else if (flags & SWS_AREA) {

  1569.                     int64_t d2= d - (1<<29);

  1570.                     if      (d2*xInc < -(1LL<<(29+16))) coeff= 1.0 * (1LL<<(30+16));

  1571.                     else if (d2*xInc <  (1LL<<(29+16))) coeff= -d2*xInc + (1LL<<(29+16));

  1572.                     else coeff=0.0;

  1573.                     coeff *= fone>>(30+16);

  1574.                 } else if (flags & SWS_GAUSS) {

  1575.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1576.                     coeff = (pow(2.0, - p*floatd*floatd))*fone;

  1577.                 } else if (flags & SWS_SINC) {

  1578.                     coeff = (d ? sin(floatd*PI)/(floatd*PI) : 1.0)*fone;

  1579.                 } else if (flags & SWS_LANCZOS) {

  1580.                     double p= param[0] != SWS_PARAM_DEFAULT ? param[0] : 3.0;

  1581.                     coeff = (d ? sin(floatd*PI)*sin(floatd*PI/p)/(floatd*floatd*PI*PI/p) : 1.0)*fone;

  1582.                     if (floatd>p) coeff=0;

  1583.                 } else if (flags & SWS_BILINEAR) {

  1584.                     coeff= (1<<30) - d;

  1585.                     if (coeff<0) coeff=0;

  1586.                     coeff *= fone >> 30;

  1587.                 } else if (flags & SWS_SPLINE) {

  1588.                     double p=-2.196152422706632;

  1589.                     coeff = getSplineCoeff(1.0, 0.0, p, -p-1.0, floatd) * fone;

  1590.                 } else {

  1591.                     coeff= 0.0; //GCC warning killer

  1592.                     assert(0);

  1593.                 }

  1594. 

  1595.                 filter[i*filterSize + j]= coeff;

  1596.                 xx++;

  1597.             }

  1598.             xDstInSrc+= 2*xInc;

  1599.         }

  1600.     }

  1601. 

  1602.     /* apply src & dst Filter to filter -> filter2

  1603.        av_free(filter);

  1604.     */

  1605.     assert(filterSize>0);

  1606.     filter2Size= filterSize;

  1607.     if (srcFilter) filter2Size+= srcFilter->length - 1;

  1608.     if (dstFilter) filter2Size+= dstFilter->length - 1;

  1609.     assert(filter2Size>0);

  1610.     filter2= av_mallocz(filter2Size*dstW*sizeof(*filter2));

  1611. 

  1612.     for (i=0; i<dstW; i++) {

  1613.         int j, k;

  1614. 

  1615.         if(srcFilter) {

  1616.             for (k=0; k<srcFilter->length; k++) {

  1617.                 for (j=0; j<filterSize; j++)

  1618.                     filter2[i*filter2Size + k + j] += srcFilter->coeff[k]*filter[i*filterSize + j];

  1619.             }

  1620.         } else {

  1621.             for (j=0; j<filterSize; j++)

  1622.                 filter2[i*filter2Size + j]= filter[i*filterSize + j];

  1623.         }

  1624.         //FIXME dstFilter

  1625. 

  1626.         (*filterPos)[i]+= (filterSize-1)/2 - (filter2Size-1)/2;

  1627.     }

  1628.     av_freep(&filter);

  1629. 

  1630.     /* try to reduce the filter-size (step1 find size and shift left) */

  1631.     // Assume it is near normalized (*0.5 or *2.0 is OK but * 0.001 is not).

  1632.     minFilterSize= 0;

  1633.     for (i=dstW-1; i>=0; i--) {

  1634.         int min= filter2Size;

  1635.         int j;

  1636.         int64_t cutOff=0.0;

  1637. 

  1638.         /* get rid off near zero elements on the left by shifting left */

  1639.         for (j=0; j<filter2Size; j++) {

  1640.             int k;

  1641.             cutOff += FFABS(filter2[i*filter2Size]);

  1642. 

  1643.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1644. 

  1645.             /* preserve monotonicity because the core can't handle the filter otherwise */

  1646.             if (i<dstW-1 && (*filterPos)[i] >= (*filterPos)[i+1]) break;

  1647. 

  1648.             // move filter coefficients left

  1649.             for (k=1; k<filter2Size; k++)

  1650.                 filter2[i*filter2Size + k - 1]= filter2[i*filter2Size + k];

  1651.             filter2[i*filter2Size + k - 1]= 0;

  1652.             (*filterPos)[i]++;

  1653.         }

  1654. 

  1655.         cutOff=0;

  1656.         /* count near zeros on the right */

  1657.         for (j=filter2Size-1; j>0; j--) {

  1658.             cutOff += FFABS(filter2[i*filter2Size + j]);

  1659. 

  1660.             if (cutOff > SWS_MAX_REDUCE_CUTOFF*fone) break;

  1661.             min--;

  1662.         }

  1663. 

  1664.         if (min>minFilterSize) minFilterSize= min;

  1665.     }

  1666. 

  1667.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1668.         // we can handle the special case 4,

  1669.         // so we don't want to go to the full 8

  1670.         if (minFilterSize < 5)

  1671.             filterAlign = 4;

  1672. 

  1673.         // We really don't want to waste our time

  1674.         // doing useless computation, so fall back on

  1675.         // the scalar C code for very small filters.

  1676.         // Vectorizing is worth it only if you have a

  1677.         // decent-sized vector.

  1678.         if (minFilterSize < 3)

  1679.             filterAlign = 1;

  1680.     }

  1681. 

  1682.     if (flags & SWS_CPU_CAPS_MMX) {

  1683.         // special case for unscaled vertical filtering

  1684.         if (minFilterSize == 1 && filterAlign == 2)

  1685.             filterAlign= 1;

  1686.     }

  1687. 

  1688.     assert(minFilterSize > 0);

  1689.     filterSize= (minFilterSize +(filterAlign-1)) & (~(filterAlign-1));

  1690.     assert(filterSize > 0);

  1691.     filter= av_malloc(filterSize*dstW*sizeof(*filter));

  1692.     if (filterSize >= MAX_FILTER_SIZE*16/((flags&SWS_ACCURATE_RND) ? APCK_SIZE : 16) || !filter)

  1693.         goto error;

  1694.     *outFilterSize= filterSize;

  1695. 

  1696.     if (flags&SWS_PRINT_INFO)

  1697.         av_log(NULL, AV_LOG_VERBOSE, "SwScaler: reducing / aligning filtersize %d -> %d\n", filter2Size, filterSize);

  1698.     /* try to reduce the filter-size (step2 reduce it) */

  1699.     for (i=0; i<dstW; i++) {

  1700.         int j;

  1701. 

  1702.         for (j=0; j<filterSize; j++) {

  1703.             if (j>=filter2Size) filter[i*filterSize + j]= 0;

  1704.             else               filter[i*filterSize + j]= filter2[i*filter2Size + j];

  1705.             if((flags & SWS_BITEXACT) && j>=minFilterSize)

  1706.                 filter[i*filterSize + j]= 0;

  1707.         }

  1708.     }

  1709. 

  1710. 

  1711.     //FIXME try to align filterPos if possible

  1712. 

  1713.     //fix borders

  1714.     for (i=0; i<dstW; i++) {

  1715.         int j;

  1716.         if ((*filterPos)[i] < 0) {

  1717.             // move filter coefficients left to compensate for filterPos

  1718.             for (j=1; j<filterSize; j++) {

  1719.                 int left= FFMAX(j + (*filterPos)[i], 0);

  1720.                 filter[i*filterSize + left] += filter[i*filterSize + j];

  1721.                 filter[i*filterSize + j]=0;

  1722.             }

  1723.             (*filterPos)[i]= 0;

  1724.         }

  1725. 

  1726.         if ((*filterPos)[i] + filterSize > srcW) {

  1727.             int shift= (*filterPos)[i] + filterSize - srcW;

  1728.             // move filter coefficients right to compensate for filterPos

  1729.             for (j=filterSize-2; j>=0; j--) {

  1730.                 int right= FFMIN(j + shift, filterSize-1);

  1731.                 filter[i*filterSize +right] += filter[i*filterSize +j];

  1732.                 filter[i*filterSize +j]=0;

  1733.             }

  1734.             (*filterPos)[i]= srcW - filterSize;

  1735.         }

  1736.     }

  1737. 

  1738.     // Note the +1 is for the MMX scaler which reads over the end

  1739.     /* align at 16 for AltiVec (needed by hScale_altivec_real) */

  1740.     *outFilter= av_mallocz(*outFilterSize*(dstW+1)*sizeof(int16_t));

  1741. 

  1742.     /* normalize & store in outFilter */

  1743.     for (i=0; i<dstW; i++) {

  1744.         int j;

  1745.         int64_t error=0;

  1746.         int64_t sum=0;

  1747. 

  1748.         for (j=0; j<filterSize; j++) {

  1749.             sum+= filter[i*filterSize + j];

  1750.         }

  1751.         sum= (sum + one/2)/ one;

  1752.         for (j=0; j<*outFilterSize; j++) {

  1753.             int64_t v= filter[i*filterSize + j] + error;

  1754.             int intV= ROUNDED_DIV(v, sum);

  1755.             (*outFilter)[i*(*outFilterSize) + j]= intV;

  1756.             error= v - intV*sum;

  1757.         }

  1758.     }

  1759. 

  1760.     (*filterPos)[dstW]= (*filterPos)[dstW-1]; // the MMX scaler will read over the end

  1761.     for (i=0; i<*outFilterSize; i++) {

  1762.         int j= dstW*(*outFilterSize);

  1763.         (*outFilter)[j + i]= (*outFilter)[j + i - (*outFilterSize)];

  1764.     }

  1765. 

  1766.     ret=0;

  1767. error:

  1768.     av_free(filter);

  1769.     av_free(filter2);

  1770.     return ret;

  1771. }

  1772. 

  1773. #ifdef COMPILE_MMX2

  1774. static int initMMX2HScaler(int dstW, int xInc, uint8_t *filterCode, int16_t *filter, int32_t *filterPos, int numSplits)

  1775. {

  1776.     uint8_t *fragmentA;

  1777.     x86_reg imm8OfPShufW1A;

  1778.     x86_reg imm8OfPShufW2A;

  1779.     x86_reg fragmentLengthA;

  1780.     uint8_t *fragmentB;

  1781.     x86_reg imm8OfPShufW1B;

  1782.     x86_reg imm8OfPShufW2B;

  1783.     x86_reg fragmentLengthB;

  1784.     int fragmentPos;

  1785. 

  1786.     int xpos, i;

  1787. 

  1788.     // create an optimized horizontal scaling routine

  1789. 

  1790.     //code fragment

  1791. 

  1792.     __asm__ volatile(

  1793.         "jmp                         9f                 \n\t"

  1794.     // Begin

  1795.         "0:                                             \n\t"

  1796.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1797.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1798.         "movd   1(%%"REG_c", %%"REG_S"), %%mm1          \n\t"

  1799.         "punpcklbw                %%mm7, %%mm1          \n\t"

  1800.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1801.         "pshufw                   $0xFF, %%mm1, %%mm1   \n\t"

  1802.         "1:                                             \n\t"

  1803.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1804.         "2:                                             \n\t"

  1805.         "psubw                    %%mm1, %%mm0          \n\t"

  1806.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1807.         "pmullw                   %%mm3, %%mm0          \n\t"

  1808.         "psllw                       $7, %%mm1          \n\t"

  1809.         "paddw                    %%mm1, %%mm0          \n\t"

  1810. 

  1811.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1812. 

  1813.         "add                         $8, %%"REG_a"      \n\t"

  1814.     // End

  1815.         "9:                                             \n\t"

  1816. //        "int $3                                         \n\t"

  1817.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1818.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1819.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1820.         "dec                         %1                 \n\t"

  1821.         "dec                         %2                 \n\t"

  1822.         "sub                         %0, %1             \n\t"

  1823.         "sub                         %0, %2             \n\t"

  1824.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1825.         "sub                         %0, %3             \n\t"

  1826. 

  1827. 

  1828.         :"=r" (fragmentA), "=r" (imm8OfPShufW1A), "=r" (imm8OfPShufW2A),

  1829.         "=r" (fragmentLengthA)

  1830.     );

  1831. 

  1832.     __asm__ volatile(

  1833.         "jmp                         9f                 \n\t"

  1834.     // Begin

  1835.         "0:                                             \n\t"

  1836.         "movq    (%%"REG_d", %%"REG_a"), %%mm3          \n\t"

  1837.         "movd    (%%"REG_c", %%"REG_S"), %%mm0          \n\t"

  1838.         "punpcklbw                %%mm7, %%mm0          \n\t"

  1839.         "pshufw                   $0xFF, %%mm0, %%mm1   \n\t"

  1840.         "1:                                             \n\t"

  1841.         "pshufw                   $0xFF, %%mm0, %%mm0   \n\t"

  1842.         "2:                                             \n\t"

  1843.         "psubw                    %%mm1, %%mm0          \n\t"

  1844.         "movl   8(%%"REG_b", %%"REG_a"), %%esi          \n\t"

  1845.         "pmullw                   %%mm3, %%mm0          \n\t"

  1846.         "psllw                       $7, %%mm1          \n\t"

  1847.         "paddw                    %%mm1, %%mm0          \n\t"

  1848. 

  1849.         "movq                     %%mm0, (%%"REG_D", %%"REG_a") \n\t"

  1850. 

  1851.         "add                         $8, %%"REG_a"      \n\t"

  1852.     // End

  1853.         "9:                                             \n\t"

  1854. //        "int                       $3                   \n\t"

  1855.         "lea                 " LOCAL_MANGLE(0b) ", %0   \n\t"

  1856.         "lea                 " LOCAL_MANGLE(1b) ", %1   \n\t"

  1857.         "lea                 " LOCAL_MANGLE(2b) ", %2   \n\t"

  1858.         "dec                         %1                 \n\t"

  1859.         "dec                         %2                 \n\t"

  1860.         "sub                         %0, %1             \n\t"

  1861.         "sub                         %0, %2             \n\t"

  1862.         "lea                 " LOCAL_MANGLE(9b) ", %3   \n\t"

  1863.         "sub                         %0, %3             \n\t"

  1864. 

  1865. 

  1866.         :"=r" (fragmentB), "=r" (imm8OfPShufW1B), "=r" (imm8OfPShufW2B),

  1867.         "=r" (fragmentLengthB)

  1868.     );

  1869. 

  1870.     xpos= 0; //lumXInc/2 - 0x8000; // difference between pixel centers

  1871.     fragmentPos=0;

  1872. 

  1873.     for (i=0; i<dstW/numSplits; i++) {

  1874.         int xx=xpos>>16;

  1875. 

  1876.         if ((i&3) == 0) {

  1877.             int a=0;

  1878.             int b=((xpos+xInc)>>16) - xx;

  1879.             int c=((xpos+xInc*2)>>16) - xx;

  1880.             int d=((xpos+xInc*3)>>16) - xx;

  1881.             int inc                = (d+1<4);

  1882.             uint8_t *fragment      = (d+1<4) ? fragmentB       : fragmentA;

  1883.             x86_reg imm8OfPShufW1  = (d+1<4) ? imm8OfPShufW1B  : imm8OfPShufW1A;

  1884.             x86_reg imm8OfPShufW2  = (d+1<4) ? imm8OfPShufW2B  : imm8OfPShufW2A;

  1885.             x86_reg fragmentLength = (d+1<4) ? fragmentLengthB : fragmentLengthA;

  1886.             int maxShift= 3-(d+inc);

  1887.             int shift=0;

  1888. 

  1889.             if (filterCode) {

  1890.                 filter[i  ] = (( xpos         & 0xFFFF) ^ 0xFFFF)>>9;

  1891.                 filter[i+1] = (((xpos+xInc  ) & 0xFFFF) ^ 0xFFFF)>>9;

  1892.                 filter[i+2] = (((xpos+xInc*2) & 0xFFFF) ^ 0xFFFF)>>9;

  1893.                 filter[i+3] = (((xpos+xInc*3) & 0xFFFF) ^ 0xFFFF)>>9;

  1894.                 filterPos[i/2]= xx;

  1895. 

  1896.                 memcpy(filterCode + fragmentPos, fragment, fragmentLength);

  1897. 

  1898.                 filterCode[fragmentPos + imm8OfPShufW1]=

  1899.                     (a+inc) | ((b+inc)<<2) | ((c+inc)<<4) | ((d+inc)<<6);

  1900.                 filterCode[fragmentPos + imm8OfPShufW2]=

  1901.                     a | (b<<2) | (c<<4) | (d<<6);

  1902. 

  1903.                 if (i+4-inc>=dstW) shift=maxShift; //avoid overread

  1904.                 else if ((filterPos[i/2]&3) <= maxShift) shift=filterPos[i/2]&3; //Align

  1905. 

  1906.                 if (shift && i>=shift) {

  1907.                     filterCode[fragmentPos + imm8OfPShufW1]+= 0x55*shift;

  1908.                     filterCode[fragmentPos + imm8OfPShufW2]+= 0x55*shift;

  1909.                     filterPos[i/2]-=shift;

  1910.                 }

  1911.             }

  1912. 

  1913.             fragmentPos+= fragmentLength;

  1914. 

  1915.             if (filterCode)

  1916.                 filterCode[fragmentPos]= RET;

  1917.         }

  1918.         xpos+=xInc;

  1919.     }

  1920.     if (filterCode)

  1921.         filterPos[((i/2)+1)&(~1)]= xpos>>16; // needed to jump to the next part

  1922. 

  1923.     return fragmentPos + 1;

  1924. }

  1925. #endif /* COMPILE_MMX2 */

  1926. 

  1927. static void globalInit(void)

  1928. {

  1929.     // generating tables:

  1930.     int i;

  1931.     for (i=0; i<768; i++) {

  1932.         int c= av_clip_uint8(i-256);

  1933.         clip_table[i]=c;

  1934.     }

  1935. }

  1936. 

  1937. static SwsFunc getSwsFunc(SwsContext *c)

  1938. {

  1939. #if CONFIG_RUNTIME_CPUDETECT

  1940.     int flags = c->flags;

  1941. 

  1942. #if ARCH_X86 && CONFIG_GPL

  1943.     // ordered per speed fastest first

  1944.     if (flags & SWS_CPU_CAPS_MMX2) {

  1945.         sws_init_swScale_MMX2(c);

  1946.         return swScale_MMX2;

  1947.     } else if (flags & SWS_CPU_CAPS_3DNOW) {

  1948.         sws_init_swScale_3DNow(c);

  1949.         return swScale_3DNow;

  1950.     } else if (flags & SWS_CPU_CAPS_MMX) {

  1951.         sws_init_swScale_MMX(c);

  1952.         return swScale_MMX;

  1953.     } else {

  1954.         sws_init_swScale_C(c);

  1955.         return swScale_C;

  1956.     }

  1957. 

  1958. #else

  1959. #if ARCH_PPC

  1960.     if (flags & SWS_CPU_CAPS_ALTIVEC) {

  1961.         sws_init_swScale_altivec(c);

  1962.         return swScale_altivec;

  1963.     } else {

  1964.         sws_init_swScale_C(c);

  1965.         return swScale_C;

  1966.     }

  1967. #endif

  1968.     sws_init_swScale_C(c);

  1969.     return swScale_C;

  1970. #endif /* ARCH_X86 && CONFIG_GPL */

  1971. #else //CONFIG_RUNTIME_CPUDETECT

  1972. #if   COMPILE_TEMPLATE_MMX2

  1973.     sws_init_swScale_MMX2(c);

  1974.     return swScale_MMX2;

  1975. #elif COMPILE_TEMPLATE_AMD3DNOW

  1976.     sws_init_swScale_3DNow(c);

  1977.     return swScale_3DNow;

  1978. #elif COMPILE_TEMPLATE_MMX

  1979.     sws_init_swScale_MMX(c);

  1980.     return swScale_MMX;

  1981. #elif COMPILE_TEMPLATE_ALTIVEC

  1982.     sws_init_swScale_altivec(c);

  1983.     return swScale_altivec;

  1984. #else

  1985.     sws_init_swScale_C(c);

  1986.     return swScale_C;

  1987. #endif

  1988. #endif //!CONFIG_RUNTIME_CPUDETECT

  1989. }

  1990. 

  1991. static int PlanarToNV12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  1992.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  1993. {

  1994.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  1995.     /* Copy Y plane */

  1996.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  1997.         memcpy(dst, src[0], srcSliceH*dstStride[0]);

  1998.     else {

  1999.         int i;

  2000.         const uint8_t *srcPtr= src[0];

  2001.         uint8_t *dstPtr= dst;

  2002.         for (i=0; i<srcSliceH; i++) {

  2003.             memcpy(dstPtr, srcPtr, c->srcW);

  2004.             srcPtr+= srcStride[0];

  2005.             dstPtr+= dstStride[0];

  2006.         }

  2007.     }

  2008.     dst = dstParam[1] + dstStride[1]*srcSliceY/2;

  2009.     if (c->dstFormat == PIX_FMT_NV12)

  2010.         interleaveBytes(src[1], src[2], dst, c->srcW/2, srcSliceH/2, srcStride[1], srcStride[2], dstStride[0]);

  2011.     else

  2012.         interleaveBytes(src[2], src[1], dst, c->srcW/2, srcSliceH/2, srcStride[2], srcStride[1], dstStride[0]);

  2013. 

  2014.     return srcSliceH;

  2015. }

  2016. 

  2017. static int PlanarToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2018.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2019. {

  2020.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2021. 

  2022.     yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  2023. 

  2024.     return srcSliceH;

  2025. }

  2026. 

  2027. static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2028.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2029. {

  2030.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2031. 

  2032.     yv12touyvy(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]);

  2033. 

  2034.     return srcSliceH;

  2035. }

  2036. 

  2037. static int YUV422PToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2038.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2039. {

  2040.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2041. 

  2042.     yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  2043. 

  2044.     return srcSliceH;

  2045. }

  2046. 

  2047. static int YUV422PToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2048.                                 int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2049. {

  2050.     uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;

  2051. 

  2052.     yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);

  2053. 

  2054.     return srcSliceH;

  2055. }

  2056. 

  2057. static int YUYV2YUV420Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2058.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2059. {

  2060.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2061.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  2062.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  2063. 

  2064.     yuyvtoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2065. 

  2066.     if (dstParam[3])

  2067.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2068. 

  2069.     return srcSliceH;

  2070. }

  2071. 

  2072. static int YUYV2YUV422Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2073.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2074. {

  2075.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2076.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  2077.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  2078. 

  2079.     yuyvtoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2080. 

  2081.     return srcSliceH;

  2082. }

  2083. 

  2084. static int UYVY2YUV420Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2085.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2086. {

  2087.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2088.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY/2;

  2089.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY/2;

  2090. 

  2091.     uyvytoyuv420(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2092. 

  2093.     if (dstParam[3])

  2094.         fillPlane(dstParam[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2095. 

  2096.     return srcSliceH;

  2097. }

  2098. 

  2099. static int UYVY2YUV422Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2100.                                int srcSliceH, uint8_t* dstParam[], int dstStride[])

  2101. {

  2102.     uint8_t *ydst=dstParam[0] + dstStride[0]*srcSliceY;

  2103.     uint8_t *udst=dstParam[1] + dstStride[1]*srcSliceY;

  2104.     uint8_t *vdst=dstParam[2] + dstStride[2]*srcSliceY;

  2105. 

  2106.     uyvytoyuv422(ydst, udst, vdst, src[0], c->srcW, srcSliceH, dstStride[0], dstStride[1], srcStride[0]);

  2107. 

  2108.     return srcSliceH;

  2109. }

  2110. 

  2111. static int pal2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2112.                           int srcSliceH, uint8_t* dst[], int dstStride[])

  2113. {

  2114.     const enum PixelFormat srcFormat= c->srcFormat;

  2115.     const enum PixelFormat dstFormat= c->dstFormat;

  2116.     void (*conv)(const uint8_t *src, uint8_t *dst, long num_pixels,

  2117.                  const uint8_t *palette)=NULL;

  2118.     int i;

  2119.     uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2120.     uint8_t *srcPtr= src[0];

  2121. 

  2122.     if (!usePal(srcFormat))

  2123.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2124.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  2125. 

  2126.     switch(dstFormat) {

  2127.     case PIX_FMT_RGB32  : conv = palette8topacked32; break;

  2128.     case PIX_FMT_BGR32  : conv = palette8topacked32; break;

  2129.     case PIX_FMT_BGR32_1: conv = palette8topacked32; break;

  2130.     case PIX_FMT_RGB32_1: conv = palette8topacked32; break;

  2131.     case PIX_FMT_RGB24  : conv = palette8topacked24; break;

  2132.     case PIX_FMT_BGR24  : conv = palette8topacked24; break;

  2133.     default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2134.                     sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2135.     }

  2136. 

  2137. 

  2138.     for (i=0; i<srcSliceH; i++) {

  2139.         conv(srcPtr, dstPtr, c->srcW, (uint8_t *) c->pal_rgb);

  2140.         srcPtr+= srcStride[0];

  2141.         dstPtr+= dstStride[0];

  2142.     }

  2143. 

  2144.     return srcSliceH;

  2145. }

  2146. 

  2147. /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */

  2148. static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2149.                           int srcSliceH, uint8_t* dst[], int dstStride[])

  2150. {

  2151.     const enum PixelFormat srcFormat= c->srcFormat;

  2152.     const enum PixelFormat dstFormat= c->dstFormat;

  2153.     const int srcBpp= (fmt_depth(srcFormat) + 7) >> 3;

  2154.     const int dstBpp= (fmt_depth(dstFormat) + 7) >> 3;

  2155.     const int srcId= fmt_depth(srcFormat) >> 2; /* 1:0, 4:1, 8:2, 15:3, 16:4, 24:6, 32:8 */

  2156.     const int dstId= fmt_depth(dstFormat) >> 2;

  2157.     void (*conv)(const uint8_t *src, uint8_t *dst, long src_size)=NULL;

  2158. 

  2159.     /* BGR -> BGR */

  2160.     if (  (isBGR(srcFormat) && isBGR(dstFormat))

  2161.        || (isRGB(srcFormat) && isRGB(dstFormat))) {

  2162.         switch(srcId | (dstId<<4)) {

  2163.         case 0x34: conv= rgb16to15; break;

  2164.         case 0x36: conv= rgb24to15; break;

  2165.         case 0x38: conv= rgb32to15; break;

  2166.         case 0x43: conv= rgb15to16; break;

  2167.         case 0x46: conv= rgb24to16; break;

  2168.         case 0x48: conv= rgb32to16; break;

  2169.         case 0x63: conv= rgb15to24; break;

  2170.         case 0x64: conv= rgb16to24; break;

  2171.         case 0x68: conv= rgb32to24; break;

  2172.         case 0x83: conv= rgb15to32; break;

  2173.         case 0x84: conv= rgb16to32; break;

  2174.         case 0x86: conv= rgb24to32; break;

  2175.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2176.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2177.         }

  2178.     } else if (  (isBGR(srcFormat) && isRGB(dstFormat))

  2179.              || (isRGB(srcFormat) && isBGR(dstFormat))) {

  2180.         switch(srcId | (dstId<<4)) {

  2181.         case 0x33: conv= rgb15tobgr15; break;

  2182.         case 0x34: conv= rgb16tobgr15; break;

  2183.         case 0x36: conv= rgb24tobgr15; break;

  2184.         case 0x38: conv= rgb32tobgr15; break;

  2185.         case 0x43: conv= rgb15tobgr16; break;

  2186.         case 0x44: conv= rgb16tobgr16; break;

  2187.         case 0x46: conv= rgb24tobgr16; break;

  2188.         case 0x48: conv= rgb32tobgr16; break;

  2189.         case 0x63: conv= rgb15tobgr24; break;

  2190.         case 0x64: conv= rgb16tobgr24; break;

  2191.         case 0x66: conv= rgb24tobgr24; break;

  2192.         case 0x68: conv= rgb32tobgr24; break;

  2193.         case 0x83: conv= rgb15tobgr32; break;

  2194.         case 0x84: conv= rgb16tobgr32; break;

  2195.         case 0x86: conv= rgb24tobgr32; break;

  2196.         case 0x88: conv= rgb32tobgr32; break;

  2197.         default: av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2198.                         sws_format_name(srcFormat), sws_format_name(dstFormat)); break;

  2199.         }

  2200.     } else {

  2201.         av_log(c, AV_LOG_ERROR, "internal error %s -> %s converter\n",

  2202.                sws_format_name(srcFormat), sws_format_name(dstFormat));

  2203.     }

  2204. 

  2205.     if(conv) {

  2206.         uint8_t *srcPtr= src[0];

  2207.         if(srcFormat == PIX_FMT_RGB32_1 || srcFormat == PIX_FMT_BGR32_1)

  2208.             srcPtr += ALT32_CORR;

  2209. 

  2210.         if (dstStride[0]*srcBpp == srcStride[0]*dstBpp && srcStride[0] > 0)

  2211.             conv(srcPtr, dst[0] + dstStride[0]*srcSliceY, srcSliceH*srcStride[0]);

  2212.         else {

  2213.             int i;

  2214.             uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2215. 

  2216.             for (i=0; i<srcSliceH; i++) {

  2217.                 conv(srcPtr, dstPtr, c->srcW*srcBpp);

  2218.                 srcPtr+= srcStride[0];

  2219.                 dstPtr+= dstStride[0];

  2220.             }

  2221.         }

  2222.     }

  2223.     return srcSliceH;

  2224. }

  2225. 

  2226. static int bgr24toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2227.                               int srcSliceH, uint8_t* dst[], int dstStride[])

  2228. {

  2229. 

  2230.     rgb24toyv12(

  2231.         src[0],

  2232.         dst[0]+ srcSliceY    *dstStride[0],

  2233.         dst[1]+(srcSliceY>>1)*dstStride[1],

  2234.         dst[2]+(srcSliceY>>1)*dstStride[2],

  2235.         c->srcW, srcSliceH,

  2236.         dstStride[0], dstStride[1], srcStride[0]);

  2237.     if (dst[3])

  2238.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2239.     return srcSliceH;

  2240. }

  2241. 

  2242. static int yvu9toyv12Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2243.                              int srcSliceH, uint8_t* dst[], int dstStride[])

  2244. {

  2245.     int i;

  2246. 

  2247.     /* copy Y */

  2248.     if (srcStride[0]==dstStride[0] && srcStride[0] > 0)

  2249.         memcpy(dst[0]+ srcSliceY*dstStride[0], src[0], srcStride[0]*srcSliceH);

  2250.     else {

  2251.         uint8_t *srcPtr= src[0];

  2252.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2253. 

  2254.         for (i=0; i<srcSliceH; i++) {

  2255.             memcpy(dstPtr, srcPtr, c->srcW);

  2256.             srcPtr+= srcStride[0];

  2257.             dstPtr+= dstStride[0];

  2258.         }

  2259.     }

  2260. 

  2261.     if (c->dstFormat==PIX_FMT_YUV420P || c->dstFormat==PIX_FMT_YUVA420P) {

  2262.         planar2x(src[1], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  2263.                  srcSliceH >> 2, srcStride[1], dstStride[1]);

  2264.         planar2x(src[2], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  2265.                  srcSliceH >> 2, srcStride[2], dstStride[2]);

  2266.     } else {

  2267.         planar2x(src[1], dst[2] + dstStride[2]*(srcSliceY >> 1), c->chrSrcW,

  2268.                  srcSliceH >> 2, srcStride[1], dstStride[2]);

  2269.         planar2x(src[2], dst[1] + dstStride[1]*(srcSliceY >> 1), c->chrSrcW,

  2270.                  srcSliceH >> 2, srcStride[2], dstStride[1]);

  2271.     }

  2272.     if (dst[3])

  2273.         fillPlane(dst[3], dstStride[3], c->srcW, srcSliceH, srcSliceY, 255);

  2274.     return srcSliceH;

  2275. }

  2276. 

  2277. /* unscaled copy like stuff (assumes nearly identical formats) */

  2278. static int packedCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2279.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  2280. {

  2281.     if (dstStride[0]==srcStride[0] && srcStride[0] > 0)

  2282.         memcpy(dst[0] + dstStride[0]*srcSliceY, src[0], srcSliceH*dstStride[0]);

  2283.     else {

  2284.         int i;

  2285.         uint8_t *srcPtr= src[0];

  2286.         uint8_t *dstPtr= dst[0] + dstStride[0]*srcSliceY;

  2287.         int length=0;

  2288. 

  2289.         /* universal length finder */

  2290.         while(length+c->srcW <= FFABS(dstStride[0])

  2291.            && length+c->srcW <= FFABS(srcStride[0])) length+= c->srcW;

  2292.         assert(length!=0);

  2293. 

  2294.         for (i=0; i<srcSliceH; i++) {

  2295.             memcpy(dstPtr, srcPtr, length);

  2296.             srcPtr+= srcStride[0];

  2297.             dstPtr+= dstStride[0];

  2298.         }

  2299.     }

  2300.     return srcSliceH;

  2301. }

  2302. 

  2303. static int planarCopy(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  2304.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  2305. {

  2306.     int plane, i, j;

  2307.     for (plane=0; plane<4; plane++) {

  2308.         int length= (plane==0 || plane==3) ? c->srcW  : -((-c->srcW  )>>c->chrDstHSubSample);

  2309.         int y=      (plane==0 || plane==3) ? srcSliceY: -((-srcSliceY)>>c->chrDstVSubSample);

  2310.         int height= (plane==0 || plane==3) ? srcSliceH: -((-srcSliceH)>>c->chrDstVSubSample);

  2311.         uint8_t *srcPtr= src[plane];

  2312.         uint8_t *dstPtr= dst[plane] + dstStride[plane]*y;

  2313. 

  2314.         if (!dst[plane]) continue;

  2315.         // ignore palette for GRAY8

  2316.         if (plane == 1 && !dst[2]) continue;

  2317.         if (!src[plane] || (plane == 1 && !src[2])) {

  2318.             if(is16BPS(c->dstFormat))

  2319.                 length*=2;

  2320.             fillPlane(dst[plane], dstStride[plane], length, height, y, (plane==3) ? 255 : 128);

  2321.         } else {

  2322.             if(is16BPS(c->srcFormat) && !is16BPS(c->dstFormat)) {

  2323.                 if (!isBE(c->srcFormat)) srcPtr++;

  2324.                 for (i=0; i<height; i++) {

  2325.                     for (j=0; j<length; j++) dstPtr[j] = srcPtr[j<<1];

  2326.                     srcPtr+= srcStride[plane];

  2327.                     dstPtr+= dstStride[plane];

  2328.                 }

  2329.             } else if(!is16BPS(c->srcFormat) && is16BPS(c->dstFormat)) {

  2330.                 for (i=0; i<height; i++) {

  2331.                     for (j=0; j<length; j++) {

  2332.                         dstPtr[ j<<1   ] = srcPtr[j];

  2333.                         dstPtr[(j<<1)+1] = srcPtr[j];

  2334.                     }

  2335.                     srcPtr+= srcStride[plane];

  2336.                     dstPtr+= dstStride[plane];

  2337.                 }

  2338.             } else if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat)

  2339.                   && isBE(c->srcFormat) != isBE(c->dstFormat)) {

  2340. 

  2341.                 for (i=0; i<height; i++) {

  2342.                     for (j=0; j<length; j++)

  2343.                         ((uint16_t*)dstPtr)[j] = bswap_16(((uint16_t*)srcPtr)[j]);

  2344.                     srcPtr+= srcStride[plane];

  2345.                     dstPtr+= dstStride[plane];

  2346.                 }

  2347.             } else if (dstStride[plane]==srcStride[plane] && srcStride[plane] > 0)

  2348.                 memcpy(dst[plane] + dstStride[plane]*y, src[plane], height*dstStride[plane]);

  2349.             else {

  2350.                 if(is16BPS(c->srcFormat) && is16BPS(c->dstFormat))

  2351.                     length*=2;

  2352.                 for (i=0; i<height; i++) {

  2353.                     memcpy(dstPtr, srcPtr, length);

  2354.                     srcPtr+= srcStride[plane];

  2355.                     dstPtr+= dstStride[plane];

  2356.                 }

  2357.             }

  2358.         }

  2359.     }

  2360.     return srcSliceH;

  2361. }

  2362. 

  2363. 

  2364. static void getSubSampleFactors(int *h, int *v, int format)

  2365. {

  2366.     switch(format) {

  2367.     case PIX_FMT_UYVY422:

  2368.     case PIX_FMT_YUYV422:

  2369.         *h=1;

  2370.         *v=0;

  2371.         break;

  2372.     case PIX_FMT_YUV420P:

  2373.     case PIX_FMT_YUV420PLE:

  2374.     case PIX_FMT_YUV420PBE:

  2375.     case PIX_FMT_YUVA420P:

  2376.     case PIX_FMT_GRAY16BE:

  2377.     case PIX_FMT_GRAY16LE:

  2378.     case PIX_FMT_GRAY8: //FIXME remove after different subsamplings are fully implemented

  2379.     case PIX_FMT_NV12:

  2380.     case PIX_FMT_NV21:

  2381.         *h=1;

  2382.         *v=1;

  2383.         break;

  2384.     case PIX_FMT_YUV440P:

  2385.         *h=0;

  2386.         *v=1;

  2387.         break;

  2388.     case PIX_FMT_YUV410P:

  2389.         *h=2;

  2390.         *v=2;

  2391.         break;

  2392.     case PIX_FMT_YUV444P:

  2393.     case PIX_FMT_YUV444PLE:

  2394.     case PIX_FMT_YUV444PBE:

  2395.         *h=0;

  2396.         *v=0;

  2397.         break;

  2398.     case PIX_FMT_YUV422P:

  2399.     case PIX_FMT_YUV422PLE:

  2400.     case PIX_FMT_YUV422PBE:

  2401.         *h=1;

  2402.         *v=0;

  2403.         break;

  2404.     case PIX_FMT_YUV411P:

  2405.         *h=2;

  2406.         *v=0;

  2407.         break;

  2408.     default:

  2409.         *h=0;

  2410.         *v=0;

  2411.         break;

  2412.     }

  2413. }

  2414. 

  2415. static uint16_t roundToInt16(int64_t f)

  2416. {

  2417.     int r= (f + (1<<15))>>16;

  2418.          if (r<-0x7FFF) return 0x8000;

  2419.     else if (r> 0x7FFF) return 0x7FFF;

  2420.     else                return r;

  2421. }

  2422. 

  2423. int sws_setColorspaceDetails(SwsContext *c, const int inv_table[4], int srcRange, const int table[4], int dstRange, int brightness, int contrast, int saturation)

  2424. {

  2425.     int64_t crv =  inv_table[0];

  2426.     int64_t cbu =  inv_table[1];

  2427.     int64_t cgu = -inv_table[2];

  2428.     int64_t cgv = -inv_table[3];

  2429.     int64_t cy  = 1<<16;

  2430.     int64_t oy  = 0;

  2431. 

  2432.     memcpy(c->srcColorspaceTable, inv_table, sizeof(int)*4);

  2433.     memcpy(c->dstColorspaceTable,     table, sizeof(int)*4);

  2434. 

  2435.     c->brightness= brightness;

  2436.     c->contrast  = contrast;

  2437.     c->saturation= saturation;

  2438.     c->srcRange  = srcRange;

  2439.     c->dstRange  = dstRange;

  2440.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  2441. 

  2442.     c->uOffset=   0x0400040004000400LL;

  2443.     c->vOffset=   0x0400040004000400LL;

  2444. 

  2445.     if (!srcRange) {

  2446.         cy= (cy*255) / 219;

  2447.         oy= 16<<16;

  2448.     } else {

  2449.         crv= (crv*224) / 255;

  2450.         cbu= (cbu*224) / 255;

  2451.         cgu= (cgu*224) / 255;

  2452.         cgv= (cgv*224) / 255;

  2453.     }

  2454. 

  2455.     cy = (cy *contrast             )>>16;

  2456.     crv= (crv*contrast * saturation)>>32;

  2457.     cbu= (cbu*contrast * saturation)>>32;

  2458.     cgu= (cgu*contrast * saturation)>>32;

  2459.     cgv= (cgv*contrast * saturation)>>32;

  2460. 

  2461.     oy -= 256*brightness;

  2462. 

  2463.     c->yCoeff=    roundToInt16(cy *8192) * 0x0001000100010001ULL;

  2464.     c->vrCoeff=   roundToInt16(crv*8192) * 0x0001000100010001ULL;

  2465.     c->ubCoeff=   roundToInt16(cbu*8192) * 0x0001000100010001ULL;

  2466.     c->vgCoeff=   roundToInt16(cgv*8192) * 0x0001000100010001ULL;

  2467.     c->ugCoeff=   roundToInt16(cgu*8192) * 0x0001000100010001ULL;

  2468.     c->yOffset=   roundToInt16(oy *   8) * 0x0001000100010001ULL;

  2469. 

  2470.     c->yuv2rgb_y_coeff  = (int16_t)roundToInt16(cy <<13);

  2471.     c->yuv2rgb_y_offset = (int16_t)roundToInt16(oy << 9);

  2472.     c->yuv2rgb_v2r_coeff= (int16_t)roundToInt16(crv<<13);

  2473.     c->yuv2rgb_v2g_coeff= (int16_t)roundToInt16(cgv<<13);

  2474.     c->yuv2rgb_u2g_coeff= (int16_t)roundToInt16(cgu<<13);

  2475.     c->yuv2rgb_u2b_coeff= (int16_t)roundToInt16(cbu<<13);

  2476. 

  2477.     ff_yuv2rgb_c_init_tables(c, inv_table, srcRange, brightness, contrast, saturation);

  2478.     //FIXME factorize

  2479. 

  2480. #ifdef COMPILE_ALTIVEC

  2481.     if (c->flags & SWS_CPU_CAPS_ALTIVEC)

  2482.         ff_yuv2rgb_init_tables_altivec(c, inv_table, brightness, contrast, saturation);

  2483. #endif

  2484.     return 0;

  2485. }

  2486. 

  2487. int sws_getColorspaceDetails(SwsContext *c, int **inv_table, int *srcRange, int **table, int *dstRange, int *brightness, int *contrast, int *saturation)

  2488. {

  2489.     if (isYUV(c->dstFormat) || isGray(c->dstFormat)) return -1;

  2490. 

  2491.     *inv_table = c->srcColorspaceTable;

  2492.     *table     = c->dstColorspaceTable;

  2493.     *srcRange  = c->srcRange;

  2494.     *dstRange  = c->dstRange;

  2495.     *brightness= c->brightness;

  2496.     *contrast  = c->contrast;

  2497.     *saturation= c->saturation;

  2498. 

  2499.     return 0;

  2500. }

  2501. 

  2502. static int handle_jpeg(enum PixelFormat *format)

  2503. {

  2504.     switch (*format) {

  2505.     case PIX_FMT_YUVJ420P:

  2506.         *format = PIX_FMT_YUV420P;

  2507.         return 1;

  2508.     case PIX_FMT_YUVJ422P:

  2509.         *format = PIX_FMT_YUV422P;

  2510.         return 1;

  2511.     case PIX_FMT_YUVJ444P:

  2512.         *format = PIX_FMT_YUV444P;

  2513.         return 1;

  2514.     case PIX_FMT_YUVJ440P:

  2515.         *format = PIX_FMT_YUV440P;

  2516.         return 1;

  2517.     default:

  2518.         return 0;

  2519.     }

  2520. }

  2521. 

  2522. SwsContext *sws_getContext(int srcW, int srcH, enum PixelFormat srcFormat, int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  2523.                            SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)

  2524. {

  2525. 

  2526.     SwsContext *c;

  2527.     int i;

  2528.     int usesVFilter, usesHFilter;

  2529.     int unscaled, needsDither;

  2530.     int srcRange, dstRange;

  2531.     SwsFilter dummyFilter= {NULL, NULL, NULL, NULL};

  2532. #if ARCH_X86

  2533.     if (flags & SWS_CPU_CAPS_MMX)

  2534.         __asm__ volatile("emms\n\t"::: "memory");

  2535. #endif

  2536. 

  2537. #if !CONFIG_RUNTIME_CPUDETECT //ensure that the flags match the compiled variant if cpudetect is off

  2538.     flags &= ~(SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2|SWS_CPU_CAPS_3DNOW|SWS_CPU_CAPS_ALTIVEC|SWS_CPU_CAPS_BFIN);

  2539. #if   COMPILE_TEMPLATE_MMX2

  2540.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_MMX2;

  2541. #elif COMPILE_TEMPLATE_AMD3DNOW

  2542.     flags |= SWS_CPU_CAPS_MMX|SWS_CPU_CAPS_3DNOW;

  2543. #elif COMPILE_TEMPLATE_MMX

  2544.     flags |= SWS_CPU_CAPS_MMX;

  2545. #elif COMPILE_TEMPLATE_ALTIVEC

  2546.     flags |= SWS_CPU_CAPS_ALTIVEC;

  2547. #elif ARCH_BFIN

  2548.     flags |= SWS_CPU_CAPS_BFIN;

  2549. #endif

  2550. #endif /* CONFIG_RUNTIME_CPUDETECT */

  2551.     if (clip_table[512] != 255) globalInit();

  2552.     if (!rgb15to16) sws_rgb2rgb_init(flags);

  2553. 

  2554.     unscaled = (srcW == dstW && srcH == dstH);

  2555.     needsDither= (isBGR(dstFormat) || isRGB(dstFormat))

  2556.         && (fmt_depth(dstFormat))<24

  2557.         && ((fmt_depth(dstFormat))<(fmt_depth(srcFormat)) || (!(isRGB(srcFormat) || isBGR(srcFormat))));

  2558. 

  2559.     srcRange = handle_jpeg(&srcFormat);

  2560.     dstRange = handle_jpeg(&dstFormat);

  2561. 

  2562.     if (!isSupportedIn(srcFormat)) {

  2563.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as input pixel format\n", sws_format_name(srcFormat));

  2564.         return NULL;

  2565.     }

  2566.     if (!isSupportedOut(dstFormat)) {

  2567.         av_log(NULL, AV_LOG_ERROR, "swScaler: %s is not supported as output pixel format\n", sws_format_name(dstFormat));

  2568.         return NULL;

  2569.     }

  2570. 

  2571.     i= flags & ( SWS_POINT

  2572.                 |SWS_AREA

  2573.                 |SWS_BILINEAR

  2574.                 |SWS_FAST_BILINEAR

  2575.                 |SWS_BICUBIC

  2576.                 |SWS_X

  2577.                 |SWS_GAUSS

  2578.                 |SWS_LANCZOS

  2579.                 |SWS_SINC

  2580.                 |SWS_SPLINE

  2581.                 |SWS_BICUBLIN);

  2582.     if(!i || (i & (i-1))) {

  2583.         av_log(NULL, AV_LOG_ERROR, "swScaler: Exactly one scaler algorithm must be chosen\n");

  2584.         return NULL;

  2585.     }

  2586. 

  2587.     /* sanity check */

  2588.     if (srcW<4 || srcH<1 || dstW<8 || dstH<1) { //FIXME check if these are enough and try to lowwer them after fixing the relevant parts of the code

  2589.         av_log(NULL, AV_LOG_ERROR, "swScaler: %dx%d -> %dx%d is invalid scaling dimension\n",

  2590.                srcW, srcH, dstW, dstH);

  2591.         return NULL;

  2592.     }

  2593.     if(srcW > VOFW || dstW > VOFW) {

  2594.         av_log(NULL, AV_LOG_ERROR, "swScaler: Compile-time maximum width is "AV_STRINGIFY(VOFW)" change VOF/VOFW and recompile\n");

  2595.         return NULL;

  2596.     }

  2597. 

  2598.     if (!dstFilter) dstFilter= &dummyFilter;

  2599.     if (!srcFilter) srcFilter= &dummyFilter;

  2600. 

  2601.     c= av_mallocz(sizeof(SwsContext));

  2602. 

  2603.     c->av_class = &sws_context_class;

  2604.     c->srcW= srcW;

  2605.     c->srcH= srcH;

  2606.     c->dstW= dstW;

  2607.     c->dstH= dstH;

  2608.     c->lumXInc= ((srcW<<16) + (dstW>>1))/dstW;

  2609.     c->lumYInc= ((srcH<<16) + (dstH>>1))/dstH;

  2610.     c->flags= flags;

  2611.     c->dstFormat= dstFormat;

  2612.     c->srcFormat= srcFormat;

  2613.     c->vRounder= 4* 0x0001000100010001ULL;

  2614. 

  2615.     usesHFilter= usesVFilter= 0;

  2616.     if (dstFilter->lumV && dstFilter->lumV->length>1) usesVFilter=1;

  2617.     if (dstFilter->lumH && dstFilter->lumH->length>1) usesHFilter=1;

  2618.     if (dstFilter->chrV && dstFilter->chrV->length>1) usesVFilter=1;

  2619.     if (dstFilter->chrH && dstFilter->chrH->length>1) usesHFilter=1;

  2620.     if (srcFilter->lumV && srcFilter->lumV->length>1) usesVFilter=1;

  2621.     if (srcFilter->lumH && srcFilter->lumH->length>1) usesHFilter=1;

  2622.     if (srcFilter->chrV && srcFilter->chrV->length>1) usesVFilter=1;

  2623.     if (srcFilter->chrH && srcFilter->chrH->length>1) usesHFilter=1;

  2624. 

  2625.     getSubSampleFactors(&c->chrSrcHSubSample, &c->chrSrcVSubSample, srcFormat);

  2626.     getSubSampleFactors(&c->chrDstHSubSample, &c->chrDstVSubSample, dstFormat);

  2627. 

  2628.     // reuse chroma for 2 pixels RGB/BGR unless user wants full chroma interpolation

  2629.     if ((isBGR(dstFormat) || isRGB(dstFormat)) && !(flags&SWS_FULL_CHR_H_INT)) c->chrDstHSubSample=1;

  2630. 

  2631.     // drop some chroma lines if the user wants it

  2632.     c->vChrDrop= (flags&SWS_SRC_V_CHR_DROP_MASK)>>SWS_SRC_V_CHR_DROP_SHIFT;

  2633.     c->chrSrcVSubSample+= c->vChrDrop;

  2634. 

  2635.     // drop every other pixel for chroma calculation unless user wants full chroma

  2636.     if ((isBGR(srcFormat) || isRGB(srcFormat)) && !(flags&SWS_FULL_CHR_H_INP)

  2637.       && srcFormat!=PIX_FMT_RGB8      && srcFormat!=PIX_FMT_BGR8

  2638.       && srcFormat!=PIX_FMT_RGB4      && srcFormat!=PIX_FMT_BGR4

  2639.       && srcFormat!=PIX_FMT_RGB4_BYTE && srcFormat!=PIX_FMT_BGR4_BYTE

  2640.       && ((dstW>>c->chrDstHSubSample) <= (srcW>>1) || (flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2641.         c->chrSrcHSubSample=1;

  2642. 

  2643.     if (param) {

  2644.         c->param[0] = param[0];

  2645.         c->param[1] = param[1];

  2646.     } else {

  2647.         c->param[0] =

  2648.         c->param[1] = SWS_PARAM_DEFAULT;

  2649.     }

  2650. 

  2651.     // Note the -((-x)>>y) is so that we always round toward +inf.

  2652.     c->chrSrcW= -((-srcW) >> c->chrSrcHSubSample);

  2653.     c->chrSrcH= -((-srcH) >> c->chrSrcVSubSample);

  2654.     c->chrDstW= -((-dstW) >> c->chrDstHSubSample);

  2655.     c->chrDstH= -((-dstH) >> c->chrDstVSubSample);

  2656. 

  2657.     sws_setColorspaceDetails(c, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT], srcRange, ff_yuv2rgb_coeffs[SWS_CS_DEFAULT] /* FIXME*/, dstRange, 0, 1<<16, 1<<16);

  2658. 

  2659.     /* unscaled special cases */

  2660.     if (unscaled && !usesHFilter && !usesVFilter && (srcRange == dstRange || isBGR(dstFormat) || isRGB(dstFormat))) {

  2661.         /* yv12_to_nv12 */

  2662.         if ((srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) && (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21)) {

  2663.             c->swScale= PlanarToNV12Wrapper;

  2664.         }

  2665.         /* yuv2bgr */

  2666.         if ((srcFormat==PIX_FMT_YUV420P || srcFormat==PIX_FMT_YUV422P || srcFormat==PIX_FMT_YUVA420P) && (isBGR(dstFormat) || isRGB(dstFormat))

  2667.             && !(flags & SWS_ACCURATE_RND) && !(dstH&1)) {

  2668.             c->swScale= ff_yuv2rgb_get_func_ptr(c);

  2669.         }

  2670. 

  2671.         if (srcFormat==PIX_FMT_YUV410P && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_BITEXACT)) {

  2672.             c->swScale= yvu9toyv12Wrapper;

  2673.         }

  2674. 

  2675.         /* bgr24toYV12 */

  2676.         if (srcFormat==PIX_FMT_BGR24 && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_ACCURATE_RND))

  2677.             c->swScale= bgr24toyv12Wrapper;

  2678. 

  2679.         /* RGB/BGR -> RGB/BGR (no dither needed forms) */

  2680.         if (  (isBGR(srcFormat) || isRGB(srcFormat))

  2681.            && (isBGR(dstFormat) || isRGB(dstFormat))

  2682.            && srcFormat != PIX_FMT_BGR8      && dstFormat != PIX_FMT_BGR8

  2683.            && srcFormat != PIX_FMT_RGB8      && dstFormat != PIX_FMT_RGB8

  2684.            && srcFormat != PIX_FMT_BGR4      && dstFormat != PIX_FMT_BGR4

  2685.            && srcFormat != PIX_FMT_RGB4      && dstFormat != PIX_FMT_RGB4

  2686.            && srcFormat != PIX_FMT_BGR4_BYTE && dstFormat != PIX_FMT_BGR4_BYTE

  2687.            && srcFormat != PIX_FMT_RGB4_BYTE && dstFormat != PIX_FMT_RGB4_BYTE

  2688.            && srcFormat != PIX_FMT_MONOBLACK && dstFormat != PIX_FMT_MONOBLACK

  2689.            && srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE

  2690.                                              && dstFormat != PIX_FMT_RGB32_1

  2691.                                              && dstFormat != PIX_FMT_BGR32_1

  2692.            && srcFormat != PIX_FMT_RGB48LE   && dstFormat != PIX_FMT_RGB48LE

  2693.            && srcFormat != PIX_FMT_RGB48BE   && dstFormat != PIX_FMT_RGB48BE

  2694.            && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))

  2695.              c->swScale= rgb2rgbWrapper;

  2696. 

  2697.         if ((usePal(srcFormat) && (

  2698.                  dstFormat == PIX_FMT_RGB32   ||

  2699.                  dstFormat == PIX_FMT_RGB32_1 ||

  2700.                  dstFormat == PIX_FMT_RGB24   ||

  2701.                  dstFormat == PIX_FMT_BGR32   ||

  2702.                  dstFormat == PIX_FMT_BGR32_1 ||

  2703.                  dstFormat == PIX_FMT_BGR24)))

  2704.              c->swScale= pal2rgbWrapper;

  2705. 

  2706.         if (srcFormat == PIX_FMT_YUV422P) {

  2707.             if (dstFormat == PIX_FMT_YUYV422)

  2708.                 c->swScale= YUV422PToYuy2Wrapper;

  2709.             else if (dstFormat == PIX_FMT_UYVY422)

  2710.                 c->swScale= YUV422PToUyvyWrapper;

  2711.         }

  2712. 

  2713.         /* LQ converters if -sws 0 or -sws 4*/

  2714.         if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)) {

  2715.             /* yv12_to_yuy2 */

  2716.             if (srcFormat == PIX_FMT_YUV420P || srcFormat == PIX_FMT_YUVA420P) {

  2717.                 if (dstFormat == PIX_FMT_YUYV422)

  2718.                     c->swScale= PlanarToYuy2Wrapper;

  2719.                 else if (dstFormat == PIX_FMT_UYVY422)

  2720.                     c->swScale= PlanarToUyvyWrapper;

  2721.             }

  2722.         }

  2723.         if(srcFormat == PIX_FMT_YUYV422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  2724.             c->swScale= YUYV2YUV420Wrapper;

  2725.         if(srcFormat == PIX_FMT_UYVY422 && (dstFormat == PIX_FMT_YUV420P || dstFormat == PIX_FMT_YUVA420P))

  2726.             c->swScale= UYVY2YUV420Wrapper;

  2727.         if(srcFormat == PIX_FMT_YUYV422 && dstFormat == PIX_FMT_YUV422P)

  2728.             c->swScale= YUYV2YUV422Wrapper;

  2729.         if(srcFormat == PIX_FMT_UYVY422 && dstFormat == PIX_FMT_YUV422P)

  2730.             c->swScale= UYVY2YUV422Wrapper;

  2731. 

  2732. #ifdef COMPILE_ALTIVEC

  2733.         if ((c->flags & SWS_CPU_CAPS_ALTIVEC) &&

  2734.             !(c->flags & SWS_BITEXACT) &&

  2735.             srcFormat == PIX_FMT_YUV420P) {

  2736.           // unscaled YV12 -> packed YUV, we want speed

  2737.           if (dstFormat == PIX_FMT_YUYV422)

  2738.               c->swScale= yv12toyuy2_unscaled_altivec;

  2739.           else if (dstFormat == PIX_FMT_UYVY422)

  2740.               c->swScale= yv12touyvy_unscaled_altivec;

  2741.         }

  2742. #endif

  2743. 

  2744.         /* simple copy */

  2745.         if (  srcFormat == dstFormat

  2746.             || (srcFormat == PIX_FMT_YUVA420P && dstFormat == PIX_FMT_YUV420P)

  2747.             || (srcFormat == PIX_FMT_YUV420P && dstFormat == PIX_FMT_YUVA420P)

  2748.             || (isPlanarYUV(srcFormat) && isGray(dstFormat))

  2749.             || (isPlanarYUV(dstFormat) && isGray(srcFormat))

  2750.             || (isGray(dstFormat) && isGray(srcFormat))

  2751.             || (isPlanarYUV(srcFormat) && isPlanarYUV(dstFormat)

  2752.                 && c->chrDstHSubSample == c->chrSrcHSubSample

  2753.                 && c->chrDstVSubSample == c->chrSrcVSubSample

  2754.                 && dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21

  2755.                 && srcFormat != PIX_FMT_NV12 && srcFormat != PIX_FMT_NV21))

  2756.         {

  2757.             if (isPacked(c->srcFormat))

  2758.                 c->swScale= packedCopy;

  2759.             else /* Planar YUV or gray */

  2760.                 c->swScale= planarCopy;

  2761.         }

  2762. #if ARCH_BFIN

  2763.         if (flags & SWS_CPU_CAPS_BFIN)

  2764.             ff_bfin_get_unscaled_swscale (c);

  2765. #endif

  2766. 

  2767.         if (c->swScale) {

  2768.             if (flags&SWS_PRINT_INFO)

  2769.                 av_log(c, AV_LOG_INFO, "using unscaled %s -> %s special converter\n",

  2770.                        sws_format_name(srcFormat), sws_format_name(dstFormat));

  2771.             return c;

  2772.         }

  2773.     }

  2774. 

  2775.     if (flags & SWS_CPU_CAPS_MMX2) {

  2776.         c->canMMX2BeUsed= (dstW >=srcW && (dstW&31)==0 && (srcW&15)==0) ? 1 : 0;

  2777.         if (!c->canMMX2BeUsed && dstW >=srcW && (srcW&15)==0 && (flags&SWS_FAST_BILINEAR)) {

  2778.             if (flags&SWS_PRINT_INFO)

  2779.                 av_log(c, AV_LOG_INFO, "output width is not a multiple of 32 -> no MMX2 scaler\n");

  2780.         }

  2781.         if (usesHFilter) c->canMMX2BeUsed=0;

  2782.     }

  2783.     else

  2784.         c->canMMX2BeUsed=0;

  2785. 

  2786.     c->chrXInc= ((c->chrSrcW<<16) + (c->chrDstW>>1))/c->chrDstW;

  2787.     c->chrYInc= ((c->chrSrcH<<16) + (c->chrDstH>>1))/c->chrDstH;

  2788. 

  2789.     // match pixel 0 of the src to pixel 0 of dst and match pixel n-2 of src to pixel n-2 of dst

  2790.     // but only for the FAST_BILINEAR mode otherwise do correct scaling

  2791.     // n-2 is the last chrominance sample available

  2792.     // this is not perfect, but no one should notice the difference, the more correct variant

  2793.     // would be like the vertical one, but that would require some special code for the

  2794.     // first and last pixel

  2795.     if (flags&SWS_FAST_BILINEAR) {

  2796.         if (c->canMMX2BeUsed) {

  2797.             c->lumXInc+= 20;

  2798.             c->chrXInc+= 20;

  2799.         }

  2800.         //we don't use the x86 asm scaler if MMX is available

  2801.         else if (flags & SWS_CPU_CAPS_MMX) {

  2802.             c->lumXInc = ((srcW-2)<<16)/(dstW-2) - 20;

  2803.             c->chrXInc = ((c->chrSrcW-2)<<16)/(c->chrDstW-2) - 20;

  2804.         }

  2805.     }

  2806. 

  2807.     /* precalculate horizontal scaler filter coefficients */

  2808.     {

  2809.         const int filterAlign=

  2810.             (flags & SWS_CPU_CAPS_MMX) ? 4 :

  2811.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2812.             1;

  2813. 

  2814.         initFilter(&c->hLumFilter, &c->hLumFilterPos, &c->hLumFilterSize, c->lumXInc,

  2815.                    srcW      ,       dstW, filterAlign, 1<<14,

  2816.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2817.                    srcFilter->lumH, dstFilter->lumH, c->param);

  2818.         initFilter(&c->hChrFilter, &c->hChrFilterPos, &c->hChrFilterSize, c->chrXInc,

  2819.                    c->chrSrcW, c->chrDstW, filterAlign, 1<<14,

  2820.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2821.                    srcFilter->chrH, dstFilter->chrH, c->param);

  2822. 

  2823. #if defined(COMPILE_MMX2)

  2824. // can't downscale !!!

  2825.         if (c->canMMX2BeUsed && (flags & SWS_FAST_BILINEAR)) {

  2826.             c->lumMmx2FilterCodeSize = initMMX2HScaler(      dstW, c->lumXInc, NULL, NULL, NULL, 8);

  2827.             c->chrMmx2FilterCodeSize = initMMX2HScaler(c->chrDstW, c->chrXInc, NULL, NULL, NULL, 4);

  2828. 

  2829. #ifdef MAP_ANONYMOUS

  2830.             c->lumMmx2FilterCode = mmap(NULL, c->lumMmx2FilterCodeSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2831.             c->chrMmx2FilterCode = mmap(NULL, c->chrMmx2FilterCodeSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);

  2832. #elif HAVE_VIRTUALALLOC

  2833.             c->lumMmx2FilterCode = VirtualAlloc(NULL, c->lumMmx2FilterCodeSize, MEM_COMMIT, PAGE_EXECUTE_READWRITE);

  2834.             c->chrMmx2FilterCode = VirtualAlloc(NULL, c->chrMmx2FilterCodeSize, MEM_COMMIT, PAGE_EXECUTE_READWRITE);

  2835. #else

  2836.             c->lumMmx2FilterCode = av_malloc(c->lumMmx2FilterCodeSize);

  2837.             c->chrMmx2FilterCode = av_malloc(c->chrMmx2FilterCodeSize);

  2838. #endif

  2839. 

  2840.             c->lumMmx2Filter   = av_malloc((dstW        /8+8)*sizeof(int16_t));

  2841.             c->chrMmx2Filter   = av_malloc((c->chrDstW  /4+8)*sizeof(int16_t));

  2842.             c->lumMmx2FilterPos= av_malloc((dstW      /2/8+8)*sizeof(int32_t));

  2843.             c->chrMmx2FilterPos= av_malloc((c->chrDstW/2/4+8)*sizeof(int32_t));

  2844. 

  2845.             initMMX2HScaler(      dstW, c->lumXInc, c->lumMmx2FilterCode, c->lumMmx2Filter, c->lumMmx2FilterPos, 8);

  2846.             initMMX2HScaler(c->chrDstW, c->chrXInc, c->chrMmx2FilterCode, c->chrMmx2Filter, c->chrMmx2FilterPos, 4);

  2847. 

  2848. #ifdef MAP_ANONYMOUS

  2849.             mprotect(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize, PROT_EXEC | PROT_READ);

  2850.             mprotect(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize, PROT_EXEC | PROT_READ);

  2851. #endif

  2852.         }

  2853. #endif /* defined(COMPILE_MMX2) */

  2854.     } // initialize horizontal stuff

  2855. 

  2856. 

  2857. 

  2858.     /* precalculate vertical scaler filter coefficients */

  2859.     {

  2860.         const int filterAlign=

  2861.             (flags & SWS_CPU_CAPS_MMX) && (flags & SWS_ACCURATE_RND) ? 2 :

  2862.             (flags & SWS_CPU_CAPS_ALTIVEC) ? 8 :

  2863.             1;

  2864. 

  2865.         initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize, c->lumYInc,

  2866.                    srcH      ,        dstH, filterAlign, (1<<12),

  2867.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BICUBIC)  : flags,

  2868.                    srcFilter->lumV, dstFilter->lumV, c->param);

  2869.         initFilter(&c->vChrFilter, &c->vChrFilterPos, &c->vChrFilterSize, c->chrYInc,

  2870.                    c->chrSrcH, c->chrDstH, filterAlign, (1<<12),

  2871.                    (flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,

  2872.                    srcFilter->chrV, dstFilter->chrV, c->param);

  2873. 

  2874. #ifdef COMPILE_ALTIVEC

  2875.         c->vYCoeffsBank = av_malloc(sizeof (vector signed short)*c->vLumFilterSize*c->dstH);

  2876.         c->vCCoeffsBank = av_malloc(sizeof (vector signed short)*c->vChrFilterSize*c->chrDstH);

  2877. 

  2878.         for (i=0;i<c->vLumFilterSize*c->dstH;i++) {

  2879.             int j;

  2880.             short *p = (short *)&c->vYCoeffsBank[i];

  2881.             for (j=0;j<8;j++)

  2882.                 p[j] = c->vLumFilter[i];

  2883.         }

  2884. 

  2885.         for (i=0;i<c->vChrFilterSize*c->chrDstH;i++) {

  2886.             int j;

  2887.             short *p = (short *)&c->vCCoeffsBank[i];

  2888.             for (j=0;j<8;j++)

  2889.                 p[j] = c->vChrFilter[i];

  2890.         }

  2891. #endif

  2892.     }

  2893. 

  2894.     // calculate buffer sizes so that they won't run out while handling these damn slices

  2895.     c->vLumBufSize= c->vLumFilterSize;

  2896.     c->vChrBufSize= c->vChrFilterSize;

  2897.     for (i=0; i<dstH; i++) {

  2898.         int chrI= i*c->chrDstH / dstH;

  2899.         int nextSlice= FFMAX(c->vLumFilterPos[i   ] + c->vLumFilterSize - 1,

  2900.                            ((c->vChrFilterPos[chrI] + c->vChrFilterSize - 1)<<c->chrSrcVSubSample));

  2901. 

  2902.         nextSlice>>= c->chrSrcVSubSample;

  2903.         nextSlice<<= c->chrSrcVSubSample;

  2904.         if (c->vLumFilterPos[i   ] + c->vLumBufSize < nextSlice)

  2905.             c->vLumBufSize= nextSlice - c->vLumFilterPos[i];

  2906.         if (c->vChrFilterPos[chrI] + c->vChrBufSize < (nextSlice>>c->chrSrcVSubSample))

  2907.             c->vChrBufSize= (nextSlice>>c->chrSrcVSubSample) - c->vChrFilterPos[chrI];

  2908.     }

  2909. 

  2910.     // allocate pixbufs (we use dynamic allocation because otherwise we would need to

  2911.     c->lumPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));

  2912.     c->chrPixBuf= av_malloc(c->vChrBufSize*2*sizeof(int16_t*));

  2913.     if (CONFIG_SWSCALE_ALPHA && isALPHA(c->srcFormat) && isALPHA(c->dstFormat))

  2914.         c->alpPixBuf= av_malloc(c->vLumBufSize*2*sizeof(int16_t*));

  2915.     //Note we need at least one pixel more at the end because of the MMX code (just in case someone wanna replace the 4000/8000)

  2916.     /* align at 16 bytes for AltiVec */

  2917.     for (i=0; i<c->vLumBufSize; i++)

  2918.         c->lumPixBuf[i]= c->lumPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);

  2919.     for (i=0; i<c->vChrBufSize; i++)

  2920.         c->chrPixBuf[i]= c->chrPixBuf[i+c->vChrBufSize]= av_malloc((VOF+1)*2);

  2921.     if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf)

  2922.         for (i=0; i<c->vLumBufSize; i++)

  2923.             c->alpPixBuf[i]= c->alpPixBuf[i+c->vLumBufSize]= av_mallocz(VOF+1);

  2924. 

  2925.     //try to avoid drawing green stuff between the right end and the stride end

  2926.     for (i=0; i<c->vChrBufSize; i++) memset(c->chrPixBuf[i], 64, (VOF+1)*2);

  2927. 

  2928.     assert(2*VOFW == VOF);

  2929. 

  2930.     assert(c->chrDstH <= dstH);

  2931. 

  2932.     if (flags&SWS_PRINT_INFO) {

  2933. #ifdef DITHER1XBPP

  2934.         const char *dither= " dithered";

  2935. #else

  2936.         const char *dither= "";

  2937. #endif

  2938.         if (flags&SWS_FAST_BILINEAR)

  2939.             av_log(c, AV_LOG_INFO, "FAST_BILINEAR scaler, ");

  2940.         else if (flags&SWS_BILINEAR)

  2941.             av_log(c, AV_LOG_INFO, "BILINEAR scaler, ");

  2942.         else if (flags&SWS_BICUBIC)

  2943.             av_log(c, AV_LOG_INFO, "BICUBIC scaler, ");

  2944.         else if (flags&SWS_X)

  2945.             av_log(c, AV_LOG_INFO, "Experimental scaler, ");

  2946.         else if (flags&SWS_POINT)

  2947.             av_log(c, AV_LOG_INFO, "Nearest Neighbor / POINT scaler, ");

  2948.         else if (flags&SWS_AREA)

  2949.             av_log(c, AV_LOG_INFO, "Area Averageing scaler, ");

  2950.         else if (flags&SWS_BICUBLIN)

  2951.             av_log(c, AV_LOG_INFO, "luma BICUBIC / chroma BILINEAR scaler, ");

  2952.         else if (flags&SWS_GAUSS)

  2953.             av_log(c, AV_LOG_INFO, "Gaussian scaler, ");

  2954.         else if (flags&SWS_SINC)

  2955.             av_log(c, AV_LOG_INFO, "Sinc scaler, ");

  2956.         else if (flags&SWS_LANCZOS)

  2957.             av_log(c, AV_LOG_INFO, "Lanczos scaler, ");

  2958.         else if (flags&SWS_SPLINE)

  2959.             av_log(c, AV_LOG_INFO, "Bicubic spline scaler, ");

  2960.         else

  2961.             av_log(c, AV_LOG_INFO, "ehh flags invalid?! ");

  2962. 

  2963.         if (dstFormat==PIX_FMT_BGR555 || dstFormat==PIX_FMT_BGR565)

  2964.             av_log(c, AV_LOG_INFO, "from %s to%s %s ",

  2965.                    sws_format_name(srcFormat), dither, sws_format_name(dstFormat));

  2966.         else

  2967.             av_log(c, AV_LOG_INFO, "from %s to %s ",

  2968.                    sws_format_name(srcFormat), sws_format_name(dstFormat));

  2969. 

  2970.         if (flags & SWS_CPU_CAPS_MMX2)

  2971.             av_log(c, AV_LOG_INFO, "using MMX2\n");

  2972.         else if (flags & SWS_CPU_CAPS_3DNOW)

  2973.             av_log(c, AV_LOG_INFO, "using 3DNOW\n");

  2974.         else if (flags & SWS_CPU_CAPS_MMX)

  2975.             av_log(c, AV_LOG_INFO, "using MMX\n");

  2976.         else if (flags & SWS_CPU_CAPS_ALTIVEC)

  2977.             av_log(c, AV_LOG_INFO, "using AltiVec\n");

  2978.         else

  2979.             av_log(c, AV_LOG_INFO, "using C\n");

  2980.     }

  2981. 

  2982.     if (flags & SWS_PRINT_INFO) {

  2983.         if (flags & SWS_CPU_CAPS_MMX) {

  2984.             if (c->canMMX2BeUsed && (flags&SWS_FAST_BILINEAR))

  2985.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR MMX2 scaler for horizontal scaling\n");

  2986.             else {

  2987.                 if (c->hLumFilterSize==4)

  2988.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal luminance scaling\n");

  2989.                 else if (c->hLumFilterSize==8)

  2990.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal luminance scaling\n");

  2991.                 else

  2992.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal luminance scaling\n");

  2993. 

  2994.                 if (c->hChrFilterSize==4)

  2995.                     av_log(c, AV_LOG_VERBOSE, "using 4-tap MMX scaler for horizontal chrominance scaling\n");

  2996.                 else if (c->hChrFilterSize==8)

  2997.                     av_log(c, AV_LOG_VERBOSE, "using 8-tap MMX scaler for horizontal chrominance scaling\n");

  2998.                 else

  2999.                     av_log(c, AV_LOG_VERBOSE, "using n-tap MMX scaler for horizontal chrominance scaling\n");

  3000.             }

  3001.         } else {

  3002. #if ARCH_X86

  3003.             av_log(c, AV_LOG_VERBOSE, "using x86 asm scaler for horizontal scaling\n");

  3004. #else

  3005.             if (flags & SWS_FAST_BILINEAR)

  3006.                 av_log(c, AV_LOG_VERBOSE, "using FAST_BILINEAR C scaler for horizontal scaling\n");

  3007.             else

  3008.                 av_log(c, AV_LOG_VERBOSE, "using C scaler for horizontal scaling\n");

  3009. #endif

  3010.         }

  3011.         if (isPlanarYUV(dstFormat)) {

  3012.             if (c->vLumFilterSize==1)

  3013.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3014.             else

  3015.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (YV12 like)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3016.         } else {

  3017.             if (c->vLumFilterSize==1 && c->vChrFilterSize==2)

  3018.                 av_log(c, AV_LOG_VERBOSE, "using 1-tap %s \"scaler\" for vertical luminance scaling (BGR)\n"

  3019.                        "      2-tap scaler for vertical chrominance scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3020.             else if (c->vLumFilterSize==2 && c->vChrFilterSize==2)

  3021.                 av_log(c, AV_LOG_VERBOSE, "using 2-tap linear %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3022.             else

  3023.                 av_log(c, AV_LOG_VERBOSE, "using n-tap %s scaler for vertical scaling (BGR)\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3024.         }

  3025. 

  3026.         if (dstFormat==PIX_FMT_BGR24)

  3027.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR24 converter\n",

  3028.                    (flags & SWS_CPU_CAPS_MMX2) ? "MMX2" : ((flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C"));

  3029.         else if (dstFormat==PIX_FMT_RGB32)

  3030.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR32 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3031.         else if (dstFormat==PIX_FMT_BGR565)

  3032.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR16 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3033.         else if (dstFormat==PIX_FMT_BGR555)

  3034.             av_log(c, AV_LOG_VERBOSE, "using %s YV12->BGR15 converter\n", (flags & SWS_CPU_CAPS_MMX) ? "MMX" : "C");

  3035. 

  3036.         av_log(c, AV_LOG_VERBOSE, "%dx%d -> %dx%d\n", srcW, srcH, dstW, dstH);

  3037.     }

  3038.     if (flags & SWS_PRINT_INFO) {

  3039.         av_log(c, AV_LOG_DEBUG, "lum srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  3040.                c->srcW, c->srcH, c->dstW, c->dstH, c->lumXInc, c->lumYInc);

  3041.         av_log(c, AV_LOG_DEBUG, "chr srcW=%d srcH=%d dstW=%d dstH=%d xInc=%d yInc=%d\n",

  3042.                c->chrSrcW, c->chrSrcH, c->chrDstW, c->chrDstH, c->chrXInc, c->chrYInc);

  3043.     }

  3044. 

  3045.     c->swScale= getSwsFunc(c);

  3046.     return c;

  3047. }

  3048. 

  3049. static void reset_ptr(uint8_t* src[], int format)

  3050. {

  3051.     if(!isALPHA(format))

  3052.         src[3]=NULL;

  3053.     if(!isPlanarYUV(format)) {

  3054.         src[3]=src[2]=NULL;

  3055.         if(   format != PIX_FMT_PAL8

  3056.            && format != PIX_FMT_RGB8

  3057.            && format != PIX_FMT_BGR8

  3058.            && format != PIX_FMT_RGB4_BYTE

  3059.            && format != PIX_FMT_BGR4_BYTE

  3060.           )

  3061.             src[1]= NULL;

  3062.     }

  3063. }

  3064. 

  3065. /**

  3066.  * swscale wrapper, so we don't need to export the SwsContext.

  3067.  * Assumes planar YUV to be in YUV order instead of YVU.

  3068.  */

  3069. int sws_scale(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  3070.               int srcSliceH, uint8_t* dst[], int dstStride[])

  3071. {

  3072.     int i;

  3073.     uint8_t* src2[4]= {src[0], src[1], src[2], src[3]};

  3074.     uint8_t* dst2[4]= {dst[0], dst[1], dst[2], dst[3]};

  3075. 

  3076.     if (c->sliceDir == 0 && srcSliceY != 0 && srcSliceY + srcSliceH != c->srcH) {

  3077.         av_log(c, AV_LOG_ERROR, "Slices start in the middle!\n");

  3078.         return 0;

  3079.     }

  3080.     if (c->sliceDir == 0) {

  3081.         if (srcSliceY == 0) c->sliceDir = 1; else c->sliceDir = -1;

  3082.     }

  3083. 

  3084.     if (usePal(c->srcFormat)) {

  3085.         for (i=0; i<256; i++) {

  3086.             int p, r, g, b,y,u,v;

  3087.             if(c->srcFormat == PIX_FMT_PAL8) {

  3088.                 p=((uint32_t*)(src[1]))[i];

  3089.                 r= (p>>16)&0xFF;

  3090.                 g= (p>> 8)&0xFF;

  3091.                 b=  p     &0xFF;

  3092.             } else if(c->srcFormat == PIX_FMT_RGB8) {

  3093.                 r= (i>>5    )*36;

  3094.                 g= ((i>>2)&7)*36;

  3095.                 b= (i&3     )*85;

  3096.             } else if(c->srcFormat == PIX_FMT_BGR8) {

  3097.                 b= (i>>6    )*85;

  3098.                 g= ((i>>3)&7)*36;

  3099.                 r= (i&7     )*36;

  3100.             } else if(c->srcFormat == PIX_FMT_RGB4_BYTE) {

  3101.                 r= (i>>3    )*255;

  3102.                 g= ((i>>1)&3)*85;

  3103.                 b= (i&1     )*255;

  3104.             } else {

  3105.                 assert(c->srcFormat == PIX_FMT_BGR4_BYTE);

  3106.                 b= (i>>3    )*255;

  3107.                 g= ((i>>1)&3)*85;

  3108.                 r= (i&1     )*255;

  3109.             }

  3110.             y= av_clip_uint8((RY*r + GY*g + BY*b + ( 33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3111.             u= av_clip_uint8((RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3112.             v= av_clip_uint8((RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);

  3113.             c->pal_yuv[i]= y + (u<<8) + (v<<16);

  3114. 

  3115. 

  3116.             switch(c->dstFormat) {

  3117.             case PIX_FMT_BGR32:

  3118. #if !HAVE_BIGENDIAN

  3119.             case PIX_FMT_RGB24:

  3120. #endif

  3121.                 c->pal_rgb[i]=  r + (g<<8) + (b<<16);

  3122.                 break;

  3123.             case PIX_FMT_BGR32_1:

  3124. #if HAVE_BIGENDIAN

  3125.             case PIX_FMT_BGR24:

  3126. #endif

  3127.                 c->pal_rgb[i]= (r + (g<<8) + (b<<16)) << 8;

  3128.                 break;

  3129.             case PIX_FMT_RGB32_1:

  3130. #if HAVE_BIGENDIAN

  3131.             case PIX_FMT_RGB24:

  3132. #endif

  3133.                 c->pal_rgb[i]= (b + (g<<8) + (r<<16)) << 8;

  3134.                 break;

  3135.             case PIX_FMT_RGB32:

  3136. #if !HAVE_BIGENDIAN

  3137.             case PIX_FMT_BGR24:

  3138. #endif

  3139.             default:

  3140.                 c->pal_rgb[i]=  b + (g<<8) + (r<<16);

  3141.             }

  3142.         }

  3143.     }

  3144. 

  3145.     // copy strides, so they can safely be modified

  3146.     if (c->sliceDir == 1) {

  3147.         // slices go from top to bottom

  3148.         int srcStride2[4]= {srcStride[0], srcStride[1], srcStride[2], srcStride[3]};

  3149.         int dstStride2[4]= {dstStride[0], dstStride[1], dstStride[2], dstStride[3]};

  3150. 

  3151.         reset_ptr(src2, c->srcFormat);

  3152.         reset_ptr(dst2, c->dstFormat);

  3153. 

  3154.         return c->swScale(c, src2, srcStride2, srcSliceY, srcSliceH, dst2, dstStride2);

  3155.     } else {

  3156.         // slices go from bottom to top => we flip the image internally

  3157.         int srcStride2[4]= {-srcStride[0], -srcStride[1], -srcStride[2], -srcStride[3]};

  3158.         int dstStride2[4]= {-dstStride[0], -dstStride[1], -dstStride[2], -dstStride[3]};

  3159. 

  3160.         src2[0] += (srcSliceH-1)*srcStride[0];

  3161.         if (!usePal(c->srcFormat))

  3162.             src2[1] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[1];

  3163.         src2[2] += ((srcSliceH>>c->chrSrcVSubSample)-1)*srcStride[2];

  3164.         src2[3] += (srcSliceH-1)*srcStride[3];

  3165.         dst2[0] += ( c->dstH                      -1)*dstStride[0];

  3166.         dst2[1] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[1];

  3167.         dst2[2] += ((c->dstH>>c->chrDstVSubSample)-1)*dstStride[2];

  3168.         dst2[3] += ( c->dstH                      -1)*dstStride[3];

  3169. 

  3170.         reset_ptr(src2, c->srcFormat);

  3171.         reset_ptr(dst2, c->dstFormat);

  3172. 

  3173.         return c->swScale(c, src2, srcStride2, c->srcH-srcSliceY-srcSliceH, srcSliceH, dst2, dstStride2);

  3174.     }

  3175. }

  3176. 

  3177. #if LIBSWSCALE_VERSION_MAJOR < 1

  3178. int sws_scale_ordered(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,

  3179.                       int srcSliceH, uint8_t* dst[], int dstStride[])

  3180. {

  3181.     return sws_scale(c, src, srcStride, srcSliceY, srcSliceH, dst, dstStride);

  3182. }

  3183. #endif

  3184. 

  3185. SwsFilter *sws_getDefaultFilter(float lumaGBlur, float chromaGBlur,

  3186.                                 float lumaSharpen, float chromaSharpen,

  3187.                                 float chromaHShift, float chromaVShift,

  3188.                                 int verbose)

  3189. {

  3190.     SwsFilter *filter= av_malloc(sizeof(SwsFilter));

  3191. 

  3192.     if (lumaGBlur!=0.0) {

  3193.         filter->lumH= sws_getGaussianVec(lumaGBlur, 3.0);

  3194.         filter->lumV= sws_getGaussianVec(lumaGBlur, 3.0);

  3195.     } else {

  3196.         filter->lumH= sws_getIdentityVec();

  3197.         filter->lumV= sws_getIdentityVec();

  3198.     }

  3199. 

  3200.     if (chromaGBlur!=0.0) {

  3201.         filter->chrH= sws_getGaussianVec(chromaGBlur, 3.0);

  3202.         filter->chrV= sws_getGaussianVec(chromaGBlur, 3.0);

  3203.     } else {

  3204.         filter->chrH= sws_getIdentityVec();

  3205.         filter->chrV= sws_getIdentityVec();

  3206.     }

  3207. 

  3208.     if (chromaSharpen!=0.0) {

  3209.         SwsVector *id= sws_getIdentityVec();

  3210.         sws_scaleVec(filter->chrH, -chromaSharpen);

  3211.         sws_scaleVec(filter->chrV, -chromaSharpen);

  3212.         sws_addVec(filter->chrH, id);

  3213.         sws_addVec(filter->chrV, id);

  3214.         sws_freeVec(id);

  3215.     }

  3216. 

  3217.     if (lumaSharpen!=0.0) {

  3218.         SwsVector *id= sws_getIdentityVec();

  3219.         sws_scaleVec(filter->lumH, -lumaSharpen);

  3220.         sws_scaleVec(filter->lumV, -lumaSharpen);

  3221.         sws_addVec(filter->lumH, id);

  3222.         sws_addVec(filter->lumV, id);

  3223.         sws_freeVec(id);

  3224.     }

  3225. 

  3226.     if (chromaHShift != 0.0)

  3227.         sws_shiftVec(filter->chrH, (int)(chromaHShift+0.5));

  3228. 

  3229.     if (chromaVShift != 0.0)

  3230.         sws_shiftVec(filter->chrV, (int)(chromaVShift+0.5));

  3231. 

  3232.     sws_normalizeVec(filter->chrH, 1.0);

  3233.     sws_normalizeVec(filter->chrV, 1.0);

  3234.     sws_normalizeVec(filter->lumH, 1.0);

  3235.     sws_normalizeVec(filter->lumV, 1.0);

  3236. 

  3237.     if (verbose) sws_printVec2(filter->chrH, NULL, AV_LOG_DEBUG);

  3238.     if (verbose) sws_printVec2(filter->lumH, NULL, AV_LOG_DEBUG);

  3239. 

  3240.     return filter;

  3241. }

  3242. 

  3243. SwsVector *sws_allocVec(int length)

  3244. {

  3245.     SwsVector *vec = av_malloc(sizeof(SwsVector));

  3246.     if (!vec)

  3247.         return NULL;

  3248.     vec->length = length;

  3249.     vec->coeff  = av_malloc(sizeof(double) * length);

  3250.     if (!vec->coeff)

  3251.         av_freep(&vec);

  3252.     return vec;

  3253. }

  3254. 

  3255. SwsVector *sws_getGaussianVec(double variance, double quality)

  3256. {

  3257.     const int length= (int)(variance*quality + 0.5) | 1;

  3258.     int i;

  3259.     double middle= (length-1)*0.5;

  3260.     SwsVector *vec= sws_allocVec(length);

  3261. 

  3262.     if (!vec)

  3263.         return NULL;

  3264. 

  3265.     for (i=0; i<length; i++) {

  3266.         double dist= i-middle;

  3267.         vec->coeff[i]= exp(-dist*dist/(2*variance*variance)) / sqrt(2*variance*PI);

  3268.     }

  3269. 

  3270.     sws_normalizeVec(vec, 1.0);

  3271. 

  3272.     return vec;

  3273. }

  3274. 

  3275. SwsVector *sws_getConstVec(double c, int length)

  3276. {

  3277.     int i;

  3278.     SwsVector *vec= sws_allocVec(length);

  3279. 

  3280.     if (!vec)

  3281.         return NULL;

  3282. 

  3283.     for (i=0; i<length; i++)

  3284.         vec->coeff[i]= c;

  3285. 

  3286.     return vec;

  3287. }

  3288. 

  3289. 

  3290. SwsVector *sws_getIdentityVec(void)

  3291. {

  3292.     return sws_getConstVec(1.0, 1);

  3293. }

  3294. 

  3295. double sws_dcVec(SwsVector *a)

  3296. {

  3297.     int i;

  3298.     double sum=0;

  3299. 

  3300.     for (i=0; i<a->length; i++)

  3301.         sum+= a->coeff[i];

  3302. 

  3303.     return sum;

  3304. }

  3305. 

  3306. void sws_scaleVec(SwsVector *a, double scalar)

  3307. {

  3308.     int i;

  3309. 

  3310.     for (i=0; i<a->length; i++)

  3311.         a->coeff[i]*= scalar;

  3312. }

  3313. 

  3314. void sws_normalizeVec(SwsVector *a, double height)

  3315. {

  3316.     sws_scaleVec(a, height/sws_dcVec(a));

  3317. }

  3318. 

  3319. static SwsVector *sws_getConvVec(SwsVector *a, SwsVector *b)

  3320. {

  3321.     int length= a->length + b->length - 1;

  3322.     int i, j;

  3323.     SwsVector *vec= sws_getConstVec(0.0, length);

  3324. 

  3325.     if (!vec)

  3326.         return NULL;

  3327. 

  3328.     for (i=0; i<a->length; i++) {

  3329.         for (j=0; j<b->length; j++) {

  3330.             vec->coeff[i+j]+= a->coeff[i]*b->coeff[j];

  3331.         }

  3332.     }

  3333. 

  3334.     return vec;

  3335. }

  3336. 

  3337. static SwsVector *sws_sumVec(SwsVector *a, SwsVector *b)

  3338. {

  3339.     int length= FFMAX(a->length, b->length);

  3340.     int i;

  3341.     SwsVector *vec= sws_getConstVec(0.0, length);

  3342. 

  3343.     if (!vec)

  3344.         return NULL;

  3345. 

  3346.     for (i=0; i<a->length; i++) vec->coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  3347.     for (i=0; i<b->length; i++) vec->coeff[i + (length-1)/2 - (b->length-1)/2]+= b->coeff[i];

  3348. 

  3349.     return vec;

  3350. }

  3351. 

  3352. static SwsVector *sws_diffVec(SwsVector *a, SwsVector *b)

  3353. {

  3354.     int length= FFMAX(a->length, b->length);

  3355.     int i;

  3356.     SwsVector *vec= sws_getConstVec(0.0, length);

  3357. 

  3358.     if (!vec)

  3359.         return NULL;

  3360. 

  3361.     for (i=0; i<a->length; i++) vec->coeff[i + (length-1)/2 - (a->length-1)/2]+= a->coeff[i];

  3362.     for (i=0; i<b->length; i++) vec->coeff[i + (length-1)/2 - (b->length-1)/2]-= b->coeff[i];

  3363. 

  3364.     return vec;

  3365. }

  3366. 

  3367. /* shift left / or right if "shift" is negative */

  3368. static SwsVector *sws_getShiftedVec(SwsVector *a, int shift)

  3369. {

  3370.     int length= a->length + FFABS(shift)*2;

  3371.     int i;

  3372.     SwsVector *vec= sws_getConstVec(0.0, length);

  3373. 

  3374.     if (!vec)

  3375.         return NULL;

  3376. 

  3377.     for (i=0; i<a->length; i++) {

  3378.         vec->coeff[i + (length-1)/2 - (a->length-1)/2 - shift]= a->coeff[i];

  3379.     }

  3380. 

  3381.     return vec;

  3382. }

  3383. 

  3384. void sws_shiftVec(SwsVector *a, int shift)

  3385. {

  3386.     SwsVector *shifted= sws_getShiftedVec(a, shift);

  3387.     av_free(a->coeff);

  3388.     a->coeff= shifted->coeff;

  3389.     a->length= shifted->length;

  3390.     av_free(shifted);

  3391. }

  3392. 

  3393. void sws_addVec(SwsVector *a, SwsVector *b)

  3394. {

  3395.     SwsVector *sum= sws_sumVec(a, b);

  3396.     av_free(a->coeff);

  3397.     a->coeff= sum->coeff;

  3398.     a->length= sum->length;

  3399.     av_free(sum);

  3400. }

  3401. 

  3402. void sws_subVec(SwsVector *a, SwsVector *b)

  3403. {

  3404.     SwsVector *diff= sws_diffVec(a, b);

  3405.     av_free(a->coeff);

  3406.     a->coeff= diff->coeff;

  3407.     a->length= diff->length;

  3408.     av_free(diff);

  3409. }

  3410. 

  3411. void sws_convVec(SwsVector *a, SwsVector *b)

  3412. {

  3413.     SwsVector *conv= sws_getConvVec(a, b);

  3414.     av_free(a->coeff);

  3415.     a->coeff= conv->coeff;

  3416.     a->length= conv->length;

  3417.     av_free(conv);

  3418. }

  3419. 

  3420. SwsVector *sws_cloneVec(SwsVector *a)

  3421. {

  3422.     int i;

  3423.     SwsVector *vec= sws_allocVec(a->length);

  3424. 

  3425.     if (!vec)

  3426.         return NULL;

  3427. 

  3428.     for (i=0; i<a->length; i++) vec->coeff[i]= a->coeff[i];

  3429. 

  3430.     return vec;

  3431. }

  3432. 

  3433. void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level)

  3434. {

  3435.     int i;

  3436.     double max=0;

  3437.     double min=0;

  3438.     double range;

  3439. 

  3440.     for (i=0; i<a->length; i++)

  3441.         if (a->coeff[i]>max) max= a->coeff[i];

  3442. 

  3443.     for (i=0; i<a->length; i++)

  3444.         if (a->coeff[i]<min) min= a->coeff[i];

  3445. 

  3446.     range= max - min;

  3447. 

  3448.     for (i=0; i<a->length; i++) {

  3449.         int x= (int)((a->coeff[i]-min)*60.0/range +0.5);

  3450.         av_log(log_ctx, log_level, "%1.3f ", a->coeff[i]);

  3451.         for (;x>0; x--) av_log(log_ctx, log_level, " ");

  3452.         av_log(log_ctx, log_level, "|\n");

  3453.     }

  3454. }

  3455. 

  3456. #if LIBSWSCALE_VERSION_MAJOR < 1

  3457. void sws_printVec(SwsVector *a)

  3458. {

  3459.     sws_printVec2(a, NULL, AV_LOG_DEBUG);

  3460. }

  3461. #endif

  3462. 

  3463. void sws_freeVec(SwsVector *a)

  3464. {

  3465.     if (!a) return;

  3466.     av_freep(&a->coeff);

  3467.     a->length=0;

  3468.     av_free(a);

  3469. }

  3470. 

  3471. void sws_freeFilter(SwsFilter *filter)

  3472. {

  3473.     if (!filter) return;

  3474. 

  3475.     if (filter->lumH) sws_freeVec(filter->lumH);

  3476.     if (filter->lumV) sws_freeVec(filter->lumV);

  3477.     if (filter->chrH) sws_freeVec(filter->chrH);

  3478.     if (filter->chrV) sws_freeVec(filter->chrV);

  3479.     av_free(filter);

  3480. }

  3481. 

  3482. 

  3483. void sws_freeContext(SwsContext *c)

  3484. {

  3485.     int i;

  3486.     if (!c) return;

  3487. 

  3488.     if (c->lumPixBuf) {

  3489.         for (i=0; i<c->vLumBufSize; i++)

  3490.             av_freep(&c->lumPixBuf[i]);

  3491.         av_freep(&c->lumPixBuf);

  3492.     }

  3493. 

  3494.     if (c->chrPixBuf) {

  3495.         for (i=0; i<c->vChrBufSize; i++)

  3496.             av_freep(&c->chrPixBuf[i]);

  3497.         av_freep(&c->chrPixBuf);

  3498.     }

  3499. 

  3500.     if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {

  3501.         for (i=0; i<c->vLumBufSize; i++)

  3502.             av_freep(&c->alpPixBuf[i]);

  3503.         av_freep(&c->alpPixBuf);

  3504.     }

  3505. 

  3506.     av_freep(&c->vLumFilter);

  3507.     av_freep(&c->vChrFilter);

  3508.     av_freep(&c->hLumFilter);

  3509.     av_freep(&c->hChrFilter);

  3510. #ifdef COMPILE_ALTIVEC

  3511.     av_freep(&c->vYCoeffsBank);

  3512.     av_freep(&c->vCCoeffsBank);

  3513. #endif

  3514. 

  3515.     av_freep(&c->vLumFilterPos);

  3516.     av_freep(&c->vChrFilterPos);

  3517.     av_freep(&c->hLumFilterPos);

  3518.     av_freep(&c->hChrFilterPos);

  3519. 

  3520. #if ARCH_X86 && CONFIG_GPL

  3521. #ifdef MAP_ANONYMOUS

  3522.     if (c->lumMmx2FilterCode) munmap(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize);

  3523.     if (c->chrMmx2FilterCode) munmap(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize);

  3524. #elif HAVE_VIRTUALALLOC

  3525.     if (c->lumMmx2FilterCode) VirtualFree(c->lumMmx2FilterCode, c->lumMmx2FilterCodeSize, MEM_RELEASE);

  3526.     if (c->chrMmx2FilterCode) VirtualFree(c->chrMmx2FilterCode, c->chrMmx2FilterCodeSize, MEM_RELEASE);

  3527. #else

  3528.     av_free(c->lumMmx2FilterCode);

  3529.     av_free(c->chrMmx2FilterCode);

  3530. #endif

  3531.     c->lumMmx2FilterCode=NULL;

  3532.     c->chrMmx2FilterCode=NULL;

  3533. #endif /* ARCH_X86 && CONFIG_GPL */

  3534. 

  3535.     av_freep(&c->lumMmx2Filter);

  3536.     av_freep(&c->chrMmx2Filter);

  3537.     av_freep(&c->lumMmx2FilterPos);

  3538.     av_freep(&c->chrMmx2FilterPos);

  3539.     av_freep(&c->yuvTable);

  3540. 

  3541.     av_free(c);

  3542. }

  3543. 

  3544. struct SwsContext *sws_getCachedContext(struct SwsContext *context,

  3545.                                         int srcW, int srcH, enum PixelFormat srcFormat,

  3546.                                         int dstW, int dstH, enum PixelFormat dstFormat, int flags,

  3547.                                         SwsFilter *srcFilter, SwsFilter *dstFilter, const double *param)

  3548. {

  3549.     static const double default_param[2] = {SWS_PARAM_DEFAULT, SWS_PARAM_DEFAULT};

  3550. 

  3551.     if (!param)

  3552.         param = default_param;

  3553. 

  3554.     if (context) {

  3555.         if (context->srcW != srcW || context->srcH != srcH ||

  3556.             context->srcFormat != srcFormat ||

  3557.             context->dstW != dstW || context->dstH != dstH ||

  3558.             context->dstFormat != dstFormat || context->flags != flags ||

  3559.             context->param[0] != param[0] || context->param[1] != param[1])

  3560.         {

  3561.             sws_freeContext(context);

  3562.             context = NULL;

  3563.         }

  3564.     }

  3565.     if (!context) {

  3566.         return sws_getContext(srcW, srcH, srcFormat,

  3567.                               dstW, dstH, dstFormat, flags,

  3568.                               srcFilter, dstFilter, param);

  3569.     }

  3570.     return context;

  3571. }